git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build (deprecated) [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libopus will enable linking to
 194   libopus and allow the libopus encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libopus.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --disable-alsa           disable ALSA support [autodetect]
 204   --disable-appkit         disable Apple AppKit framework [autodetect]
 205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 206   --enable-avisynth        enable reading of AviSynth script files [no]
 207   --disable-bzlib          disable bzlib [autodetect]
 208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 210   --enable-frei0r          enable frei0r video filtering [no]
 211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 212                            if openssl, librtmp or gmp is not used [no]
 213   --enable-gmp             enable gmp, needed for rtmp(t)e support
 214                            if openssl or librtmp is not used [no]
 215   --enable-gnutls          enable gnutls, needed for https support
 216                            if openssl, libtls or mbedtls is not used [no]
 217   --disable-iconv          disable iconv [autodetect]
 218   --enable-jni             enable JNI support [no]
 219   --enable-ladspa          enable LADSPA audio filtering [no]
 220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
 221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
 230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
 231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
 232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 233                            and libraw1394 [no]
 234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
 240   --enable-libgme          enable Game Music Emu via libgme [no]
 241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 244   --enable-libjack         enable JACK audio sound server [no]
 245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
 246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 247   --enable-liblensfun      enable lensfun lens correction [no]
 248   --enable-libmodplug      enable ModPlug via libmodplug [no]
 249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 252   --enable-libopencv       enable video filtering via libopencv [no]
 253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 256   --enable-libopenvino     enable OpenVINO as a DNN module backend
 257                            for DNN based filters like dnn_processing [no]
 258   --enable-libopus         enable Opus de/encoding via libopus [no]
 259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 260   --enable-librabbitmq     enable RabbitMQ library [no]
 261   --enable-librav1e        enable AV1 encoding via rav1e [no]
 262   --enable-librsvg         enable SVG rasterization via librsvg [no]
 263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 268   --enable-libsoxr         enable Include libsoxr resampling [no]
 269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
 271   --enable-libssh          enable SFTP protocol via libssh [no]
 272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
 273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
 274                            for DNN based filters like sr [no]
 275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 276   --enable-libtheora       enable Theora encoding via libtheora [no]
 277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
 278                            if openssl, gnutls or mbedtls is not used [no]
 279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 280   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 281   --enable-libvidstab      enable video stabilization using vid.stab [no]
 282   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 283   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 284   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 285                            native implementation exists [no]
 286   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 287   --enable-libwebp         enable WebP encoding via libwebp [no]
 288   --enable-libx264         enable H.264 encoding via x264 [no]
 289   --enable-libx265         enable HEVC encoding via x265 [no]
 290   --enable-libxavs         enable AVS encoding via xavs [no]
 291   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
 292   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 293   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 294   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 295   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 296   --enable-libxvid         enable Xvid encoding via xvidcore,
 297                            native MPEG-4/Xvid encoder exists [no]
 298   --enable-libxml2         enable XML parsing using the C library libxml2, needed
 299                            for dash demuxing support [no]
 300   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 301   --enable-libzmq          enable message passing via libzmq [no]
 302   --enable-libzvbi         enable teletext support via libzvbi [no]
 303   --enable-lv2             enable LV2 audio filtering [no]
 304   --disable-lzma           disable lzma [autodetect]
 305   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 306   --enable-mbedtls         enable mbedTLS, needed for https support
 307                            if openssl, gnutls or libtls is not used [no]
 308   --enable-mediacodec      enable Android MediaCodec support [no]
 309   --enable-mediafoundation enable encoding via MediaFoundation [auto]
 310   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 311   --enable-openal          enable OpenAL 1.1 capture support [no]
 312   --enable-opencl          enable OpenCL processing [no]
 313   --enable-opengl          enable OpenGL rendering [no]
 314   --enable-openssl         enable openssl, needed for https support
 315                            if gnutls, libtls or mbedtls is not used [no]
 316   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
 317   --disable-sndio          disable sndio support [autodetect]
 318   --disable-schannel       disable SChannel SSP, needed for TLS support on
 319                            Windows if openssl and gnutls are not used [autodetect]
 320   --disable-sdl2           disable sdl2 [autodetect]
 321   --disable-securetransport disable Secure Transport, needed for TLS support
 322                            on OSX if openssl and gnutls are not used [autodetect]
 323   --enable-vapoursynth     enable VapourSynth demuxer [no]
 324   --enable-vulkan          enable Vulkan code [no]
 325   --disable-xlib           disable xlib [autodetect]
 326   --disable-zlib           disable zlib [autodetect]
 327
 328   The following libraries provide various hardware acceleration features:
 329   --disable-amf            disable AMF video encoding code [autodetect]
 330   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 331   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
 332   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
 333   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 334   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 335   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 336   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
 337   --enable-libdrm          enable DRM code (Linux) [no]
 338   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 339   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 340   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 341   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 342   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 343   --enable-omx             enable OpenMAX IL code [no]
 344   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 345   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 346   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
 347   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 348   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 349   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 350
 351 Toolchain options:
 352   --arch=ARCH              select architecture [$arch]
 353   --cpu=CPU                select the minimum required CPU (affects
 354                            instruction selection, may crash on older CPUs)
 355   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 356   --progs-suffix=SUFFIX    program name suffix []
 357   --enable-cross-compile   assume a cross-compiler is used
 358   --sysroot=PATH           root of cross-build tree
 359   --sysinclude=PATH        location of cross-build system headers
 360   --target-os=OS           compiler targets OS [$target_os]
 361   --target-exec=CMD        command to run executables on target
 362   --target-path=DIR        path to view of build directory on target
 363   --target-samples=DIR     path to samples directory on target
 364   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 365   --toolchain=NAME         set tool defaults according to NAME
 366                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 367                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 368                            valgrind-massif, valgrind-memcheck,
 369                            msvc, icl, gcov, llvm-cov, hardened)
 370   --nm=NM                  use nm tool NM [$nm_default]
 371   --ar=AR                  use archive tool AR [$ar_default]
 372   --as=AS                  use assembler AS [$as_default]
 373   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 374   --strip=STRIP            use strip tool STRIP [$strip_default]
 375   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 376   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 377   --cc=CC                  use C compiler CC [$cc_default]
 378   --cxx=CXX                use C compiler CXX [$cxx_default]
 379   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 380   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 381   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
 382   --ld=LD                  use linker LD [$ld_default]
 383   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 384   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 385   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 386   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 387   --host-cc=HOSTCC         use host C compiler HOSTCC
 388   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 389   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 390   --host-ld=HOSTLD         use host linker HOSTLD
 391   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 392   --host-extralibs=HLIBS   use libs HLIBS when linking for host
 393   --host-os=OS             compiler host OS [$target_os]
 394   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 395   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 396   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 397   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 398   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 399   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 400   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 401   --extra-version=STRING   version string suffix []
 402   --optflags=OPTFLAGS      override optimization-related compiler flags
 403   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 404   --build-suffix=SUFFIX    library name suffix []
 405   --enable-pic             build position-independent code
 406   --enable-thumb           compile for Thumb instruction set
 407   --enable-lto             use link-time optimization
 408   --env="ENV=override"     override the environment variables
 409
 410 Advanced options (experts only):
 411   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 412   --custom-allocator=NAME  use a supported custom allocator
 413   --disable-symver         disable symbol versioning
 414   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 415   --disable-safe-bitstream-reader
 416                            disable buffer boundary checking in bitreaders
 417                            (faster, but may crash)
 418   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 419
 420 Optimization options (experts only):
 421   --disable-asm            disable all assembly optimizations
 422   --disable-altivec        disable AltiVec optimizations
 423   --disable-vsx            disable VSX optimizations
 424   --disable-power8         disable POWER8 optimizations
 425   --disable-amd3dnow       disable 3DNow! optimizations
 426   --disable-amd3dnowext    disable 3DNow! extended optimizations
 427   --disable-mmx            disable MMX optimizations
 428   --disable-mmxext         disable MMXEXT optimizations
 429   --disable-sse            disable SSE optimizations
 430   --disable-sse2           disable SSE2 optimizations
 431   --disable-sse3           disable SSE3 optimizations
 432   --disable-ssse3          disable SSSE3 optimizations
 433   --disable-sse4           disable SSE4 optimizations
 434   --disable-sse42          disable SSE4.2 optimizations
 435   --disable-avx            disable AVX optimizations
 436   --disable-xop            disable XOP optimizations
 437   --disable-fma3           disable FMA3 optimizations
 438   --disable-fma4           disable FMA4 optimizations
 439   --disable-avx2           disable AVX2 optimizations
 440   --disable-avx512         disable AVX-512 optimizations
 441   --disable-aesni          disable AESNI optimizations
 442   --disable-armv5te        disable armv5te optimizations
 443   --disable-armv6          disable armv6 optimizations
 444   --disable-armv6t2        disable armv6t2 optimizations
 445   --disable-vfp            disable VFP optimizations
 446   --disable-neon           disable NEON optimizations
 447   --disable-inline-asm     disable use of inline assembly
 448   --disable-x86asm         disable use of standalone x86 assembly
 449   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 450   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 451   --disable-msa            disable MSA optimizations
 452   --disable-msa2           disable MSA2 optimizations
 453   --disable-mipsfpu        disable floating point MIPS optimizations
 454   --disable-mmi            disable Loongson SIMD optimizations
 455   --disable-fast-unaligned consider unaligned accesses slow
 456
 457 Developer options (useful when working on FFmpeg itself):
 458   --disable-debug          disable debugging symbols
 459   --enable-debug=LEVEL     set the debug level [$debuglevel]
 460   --disable-optimizations  disable compiler optimizations
 461   --enable-extra-warnings  enable more compiler warnings
 462   --disable-stripping      disable stripping of executables and shared libraries
 463   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 464                            2 causes a slowdown at runtime.
 465   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 466   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 467                            leaks and errors, using the specified valgrind binary.
 468                            Cannot be combined with --target-exec
 469   --enable-ftrapv          Trap arithmetic overflows
 470   --samples=PATH           location of test samples for FATE, if not set use
 471                            \$FATE_SAMPLES at make invocation time.
 472   --enable-neon-clobber-test check NEON registers for clobbering (should be
 473                            used only for debugging purposes)
 474   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 475                            should be used only for debugging purposes)
 476   --enable-random          randomly enable/disable components
 477   --disable-random
 478   --enable-random=LIST     randomly enable/disable specific components or
 479   --disable-random=LIST    component groups. LIST is a comma-separated list
 480                            of NAME[:PROB] entries where NAME is a component
 481                            (group) and PROB the probability associated with
 482                            NAME (default 0.5).
 483   --random-seed=VALUE      seed value for --enable/disable-random
 484   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 485                            (only applies to --disable-optimizations builds)
 486   --enable-ossfuzz         Enable building fuzzer tool
 487   --libfuzzer=PATH         path to libfuzzer
 488   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 489                            in the name) of tests whose result is ignored
 490   --enable-linux-perf      enable Linux Performance Monitor API
 491   --disable-large-tests    disable tests that use a large amount of memory
 492
 493 NOTE: Object files are built at the place where configure is launched.
 494 EOF
 495   exit 0
 496 }
 497
 498 if test -t 1 && which tput >/dev/null 2>&1; then
 499     ncolors=$(tput colors)
 500     if test -n "$ncolors" && test $ncolors -ge 8; then
 501         bold_color=$(tput bold)
 502         warn_color=$(tput setaf 3)
 503         error_color=$(tput setaf 1)
 504         reset_color=$(tput sgr0)
 505     fi
 506     # 72 used instead of 80 since that's the default of pr
 507     ncols=$(tput cols)
 508 fi
 509 : ${ncols:=72}
 510
 511 log(){
 512     echo "$@" >> $logfile
 513 }
 514
 515 log_file(){
 516     log BEGIN "$1"
 517     log_file_i=1
 518     while IFS= read -r log_file_line; do
 519         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
 520         log_file_i=$(($log_file_i+1))
 521     done < "$1" >> "$logfile"
 522     log END "$1"
 523 }
 524
 525 warn(){
 526     log "WARNING: $*"
 527     WARNINGS="${WARNINGS}WARNING: $*\n"
 528 }
 529
 530 die(){
 531     log "$@"
 532     echo "$error_color$bold_color$@$reset_color"
 533     cat <<EOF
 534
 535 If you think configure made a mistake, make sure you are using the latest
 536 version from Git.  If the latest version fails, report the problem to the
 537 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 538 EOF
 539     if disabled logging; then
 540         cat <<EOF
 541 Rerun configure with logging enabled (do not use --disable-logging), and
 542 include the log this produces with your report.
 543 EOF
 544     else
 545         cat <<EOF
 546 Include the log file "$logfile" produced by configure as this will help
 547 solve the problem.
 548 EOF
 549     fi
 550     exit 1
 551 }
 552
 553 # Avoid locale weirdness, besides we really just want to translate ASCII.
 554 toupper(){
 555     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 556 }
 557
 558 tolower(){
 559     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 560 }
 561
 562 c_escape(){
 563     echo "$*" | sed 's/["\\]/\\\0/g'
 564 }
 565
 566 sh_quote(){
 567     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 568     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 569     echo "$v"
 570 }
 571
 572 cleanws(){
 573     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 574 }
 575
 576 filter(){
 577     pat=$1
 578     shift
 579     for v; do
 580         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 581     done
 582 }
 583
 584 filter_out(){
 585     pat=$1
 586     shift
 587     for v; do
 588         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 589     done
 590 }
 591
 592 map(){
 593     m=$1
 594     shift
 595     for v; do eval $m; done
 596 }
 597
 598 add_suffix(){
 599     suffix=$1
 600     shift
 601     for v; do echo ${v}${suffix}; done
 602 }
 603
 604 remove_suffix(){
 605     suffix=$1
 606     shift
 607     for v; do echo ${v%$suffix}; done
 608 }
 609
 610 set_all(){
 611     value=$1
 612     shift
 613     for var in $*; do
 614         eval $var=$value
 615     done
 616 }
 617
 618 set_weak(){
 619     value=$1
 620     shift
 621     for var; do
 622         eval : \${$var:=$value}
 623     done
 624 }
 625
 626 sanitize_var_name(){
 627     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 628 }
 629
 630 set_sanitized(){
 631     var=$1
 632     shift
 633     eval $(sanitize_var_name "$var")='$*'
 634 }
 635
 636 get_sanitized(){
 637     eval echo \$$(sanitize_var_name "$1")
 638 }
 639
 640 pushvar(){
 641     for pvar in $*; do
 642         eval level=\${${pvar}_level:=0}
 643         eval ${pvar}_${level}="\$$pvar"
 644         eval ${pvar}_level=$(($level+1))
 645     done
 646 }
 647
 648 popvar(){
 649     for pvar in $*; do
 650         eval level=\${${pvar}_level:-0}
 651         test $level = 0 && continue
 652         eval level=$(($level-1))
 653         eval $pvar="\${${pvar}_${level}}"
 654         eval ${pvar}_level=$level
 655         eval unset ${pvar}_${level}
 656     done
 657 }
 658
 659 request(){
 660     for var in $*; do
 661         eval ${var}_requested=yes
 662         eval $var=
 663     done
 664 }
 665
 666 warn_if_gets_disabled(){
 667     for var in $*; do
 668         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
 669     done
 670 }
 671
 672 enable(){
 673     set_all yes $*
 674 }
 675
 676 disable(){
 677     set_all no $*
 678 }
 679
 680 disable_with_reason(){
 681     disable $1
 682     eval "${1}_disable_reason=\"$2\""
 683     if requested $1; then
 684         die "ERROR: $1 requested, but $2"
 685     fi
 686 }
 687
 688 enable_weak(){
 689     set_weak yes $*
 690 }
 691
 692 disable_weak(){
 693     set_weak no $*
 694 }
 695
 696 enable_sanitized(){
 697     for var; do
 698         enable $(sanitize_var_name $var)
 699     done
 700 }
 701
 702 disable_sanitized(){
 703     for var; do
 704         disable $(sanitize_var_name $var)
 705     done
 706 }
 707
 708 do_enable_deep(){
 709     for var; do
 710         enabled $var && continue
 711         set -- $var
 712         eval enable_deep \$${var}_select
 713         var=$1
 714         eval enable_deep_weak \$${var}_suggest
 715     done
 716 }
 717
 718 enable_deep(){
 719     do_enable_deep $*
 720     enable $*
 721 }
 722
 723 enable_deep_weak(){
 724     for var; do
 725         disabled $var && continue
 726         set -- $var
 727         do_enable_deep $var
 728         var=$1
 729         enable_weak $var
 730     done
 731 }
 732
 733 requested(){
 734     test "${1#!}" = "$1" && op="=" || op="!="
 735     eval test "x\$${1#!}_requested" $op "xyes"
 736 }
 737
 738 enabled(){
 739     test "${1#!}" = "$1" && op="=" || op="!="
 740     eval test "x\$${1#!}" $op "xyes"
 741 }
 742
 743 disabled(){
 744     test "${1#!}" = "$1" && op="=" || op="!="
 745     eval test "x\$${1#!}" $op "xno"
 746 }
 747
 748 enabled_all(){
 749     for opt; do
 750         enabled $opt || return 1
 751     done
 752 }
 753
 754 disabled_all(){
 755     for opt; do
 756         disabled $opt || return 1
 757     done
 758 }
 759
 760 enabled_any(){
 761     for opt; do
 762         enabled $opt && return 0
 763     done
 764 }
 765
 766 disabled_any(){
 767     for opt; do
 768         disabled $opt && return 0
 769     done
 770     return 1
 771 }
 772
 773 set_default(){
 774     for opt; do
 775         eval : \${$opt:=\$${opt}_default}
 776     done
 777 }
 778
 779 is_in(){
 780     value=$1
 781     shift
 782     for var in $*; do
 783         [ $var = $value ] && return 0
 784     done
 785     return 1
 786 }
 787
 788 # The cfg loop is very hot (several thousands iterations), and in bash also
 789 # potentialy quite slow. Try to abort the iterations early, preferably without
 790 # calling functions. 70%+ of the time cfg is already done or without deps.
 791 check_deps(){
 792     for cfg; do
 793         eval [ x\$${cfg}_checking = xdone ] && continue
 794         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
 795
 796         eval "
 797         dep_all=\$${cfg}_deps
 798         dep_any=\$${cfg}_deps_any
 799         dep_con=\$${cfg}_conflict
 800         dep_sel=\$${cfg}_select
 801         dep_sgs=\$${cfg}_suggest
 802         dep_ifa=\$${cfg}_if
 803         dep_ifn=\$${cfg}_if_any
 804         "
 805
 806         # most of the time here $cfg has no deps - avoid costly no-op work
 807         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
 808             eval ${cfg}_checking=inprogress
 809
 810             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
 811             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 812             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
 813
 814             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 815             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 816             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
 817             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
 818             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
 819             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
 820
 821             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 822
 823             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 824                 # filter out library deps, these do not belong in extralibs
 825                 is_in $dep $LIBRARY_LIST && continue
 826                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 827             done
 828         fi
 829
 830         eval ${cfg}_checking=done
 831     done
 832 }
 833
 834 print_config(){
 835     pfx=$1
 836     files=$2
 837     shift 2
 838     map 'eval echo "$v \${$v:-no}"' "$@" |
 839     awk "BEGIN { split(\"$files\", files) }
 840         {
 841             c = \"$pfx\" toupper(\$1);
 842             v = \$2;
 843             sub(/yes/, 1, v);
 844             sub(/no/,  0, v);
 845             for (f in files) {
 846                 file = files[f];
 847                 if (file ~ /\\.h\$/) {
 848                     printf(\"#define %s %d\\n\", c, v) >>file;
 849                 } else if (file ~ /\\.asm\$/) {
 850                     printf(\"%%define %s %d\\n\", c, v) >>file;
 851                 } else if (file ~ /\\.mak\$/) {
 852                     n = -v ? \"\" : \"!\";
 853                     printf(\"%s%s=yes\\n\", n, c) >>file;
 854                 } else if (file ~ /\\.texi\$/) {
 855                     pre = -v ? \"\" : \"@c \";
 856                     yesno = \$2;
 857                     c2 = tolower(c);
 858                     gsub(/_/, \"-\", c2);
 859                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 860                 }
 861             }
 862         }"
 863 }
 864
 865 print_enabled(){
 866     suf=$1
 867     shift
 868     for v; do
 869         enabled $v && printf "%s\n" ${v%$suf}
 870     done
 871 }
 872
 873 append(){
 874     var=$1
 875     shift
 876     eval "$var=\"\$$var $*\""
 877 }
 878
 879 prepend(){
 880     var=$1
 881     shift
 882     eval "$var=\"$* \$$var\""
 883 }
 884
 885 reverse () {
 886     eval '
 887         reverse_out=
 888         for v in $'$1'; do
 889             reverse_out="$v $reverse_out"
 890         done
 891         '$1'=$reverse_out
 892     '
 893 }
 894
 895 # keeps the last occurence of each non-unique item
 896 unique(){
 897     unique_out=
 898     eval unique_in=\$$1
 899     reverse unique_in
 900     for v in $unique_in; do
 901         # " $unique_out" +space such that every item is surrounded with spaces
 902         case " $unique_out" in *" $v "*) continue; esac  # already in list
 903         unique_out="$unique_out$v "
 904     done
 905     reverse unique_out
 906     eval $1=\$unique_out
 907 }
 908
 909 resolve(){
 910     resolve_out=
 911     eval resolve_in=\$$1
 912     for v in $resolve_in; do
 913         eval 'resolve_out="$resolve_out$'$v' "'
 914     done
 915     eval $1=\$resolve_out
 916 }
 917
 918 add_cppflags(){
 919     append CPPFLAGS "$@"
 920 }
 921
 922 add_cflags(){
 923     append CFLAGS $($cflags_filter "$@")
 924 }
 925
 926 add_cflags_headers(){
 927     append CFLAGS_HEADERS $($cflags_filter "$@")
 928 }
 929
 930 add_cxxflags(){
 931     append CXXFLAGS $($cflags_filter "$@")
 932 }
 933
 934 add_objcflags(){
 935     append OBJCFLAGS $($objcflags_filter "$@")
 936 }
 937
 938 add_asflags(){
 939     append ASFLAGS $($asflags_filter "$@")
 940 }
 941
 942 add_ldflags(){
 943     append LDFLAGS $($ldflags_filter "$@")
 944 }
 945
 946 add_ldexeflags(){
 947     append LDEXEFLAGS $($ldflags_filter "$@")
 948 }
 949
 950 add_ldsoflags(){
 951     append LDSOFLAGS $($ldflags_filter "$@")
 952 }
 953
 954 add_extralibs(){
 955     prepend extralibs $($ldflags_filter "$@")
 956 }
 957
 958 add_stripflags(){
 959     append ASMSTRIPFLAGS "$@"
 960 }
 961
 962 add_host_cppflags(){
 963     append host_cppflags "$@"
 964 }
 965
 966 add_host_cflags(){
 967     append host_cflags $($host_cflags_filter "$@")
 968 }
 969
 970 add_host_ldflags(){
 971     append host_ldflags $($host_ldflags_filter "$@")
 972 }
 973
 974 add_compat(){
 975     append compat_objs $1
 976     shift
 977     map 'add_cppflags -D$v' "$@"
 978 }
 979
 980 test_cmd(){
 981     log "$@"
 982     "$@" >> $logfile 2>&1
 983 }
 984
 985 test_stat(){
 986     log test_stat "$@"
 987     stat "$1" >> $logfile 2>&1
 988 }
 989
 990 cc_e(){
 991     eval printf '%s\\n' $CC_E
 992 }
 993
 994 cc_o(){
 995     eval printf '%s\\n' $CC_O
 996 }
 997
 998 as_o(){
 999     eval printf '%s\\n' $AS_O
1000 }
1001
1002 x86asm_o(){
1003     eval printf '%s\\n' $X86ASM_O
1004 }
1005
1006 ld_o(){
1007     eval printf '%s\\n' $LD_O
1008 }
1009
1010 hostcc_e(){
1011     eval printf '%s\\n' $HOSTCC_E
1012 }
1013
1014 hostcc_o(){
1015     eval printf '%s\\n' $HOSTCC_O
1016 }
1017
1018 nvcc_o(){
1019     eval printf '%s\\n' $NVCC_O
1020 }
1021
1022 test_cc(){
1023     log test_cc "$@"
1024     cat > $TMPC
1025     log_file $TMPC
1026     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1027 }
1028
1029 test_cxx(){
1030     log test_cxx "$@"
1031     cat > $TMPCPP
1032     log_file $TMPCPP
1033     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1034 }
1035
1036 test_objcc(){
1037     log test_objcc "$@"
1038     cat > $TMPM
1039     log_file $TMPM
1040     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1041 }
1042
1043 test_nvcc(){
1044     log test_nvcc "$@"
1045     cat > $TMPCU
1046     log_file $TMPCU
1047     tmpcu_=$TMPCU
1048     tmpo_=$TMPO
1049     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1050     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1051 }
1052
1053 check_nvcc() {
1054     log check_nvcc "$@"
1055     name=$1
1056     shift 1
1057     disabled $name && return
1058     disable $name
1059     test_nvcc "$@" <<EOF && enable $name
1060 extern "C" {
1061     __global__ void hello(unsigned char *data) {}
1062 }
1063 EOF
1064 }
1065
1066 test_cpp(){
1067     log test_cpp "$@"
1068     cat > $TMPC
1069     log_file $TMPC
1070     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1071 }
1072
1073 test_as(){
1074     log test_as "$@"
1075     cat > $TMPS
1076     log_file $TMPS
1077     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1078 }
1079
1080 test_x86asm(){
1081     log test_x86asm "$@"
1082     echo "$1" > $TMPASM
1083     log_file $TMPASM
1084     shift
1085     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1086 }
1087
1088 check_cmd(){
1089     log check_cmd "$@"
1090     cmd=$1
1091     disabled $cmd && return
1092     disable $cmd
1093     test_cmd $@ && enable $cmd
1094 }
1095
1096 check_as(){
1097     log check_as "$@"
1098     name=$1
1099     code=$2
1100     shift 2
1101     disable $name
1102     test_as $@ <<EOF && enable $name
1103 $code
1104 EOF
1105 }
1106
1107 check_inline_asm(){
1108     log check_inline_asm "$@"
1109     name="$1"
1110     code="$2"
1111     shift 2
1112     disable $name
1113     test_cc "$@" <<EOF && enable $name
1114 void foo(void){ __asm__ volatile($code); }
1115 EOF
1116 }
1117
1118 check_inline_asm_flags(){
1119     log check_inline_asm_flags "$@"
1120     name="$1"
1121     code="$2"
1122     flags=''
1123     shift 2
1124     while [ "$1" != "" ]; do
1125       append flags $1
1126       shift
1127     done;
1128     disable $name
1129     cat > $TMPC <<EOF
1130 void foo(void){ __asm__ volatile($code); }
1131 EOF
1132     log_file $TMPC
1133     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1134     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1135 }
1136
1137 check_insn(){
1138     log check_insn "$@"
1139     check_inline_asm ${1}_inline "\"$2\""
1140     check_as ${1}_external "$2"
1141 }
1142
1143 check_x86asm(){
1144     log check_x86asm "$@"
1145     name=$1
1146     shift
1147     disable $name
1148     test_x86asm "$@" && enable $name
1149 }
1150
1151 test_ld(){
1152     log test_ld "$@"
1153     type=$1
1154     shift 1
1155     flags=$(filter_out '-l*|*.so' $@)
1156     libs=$(filter '-l*|*.so' $@)
1157     test_$type $($cflags_filter $flags) || return
1158     flags=$($ldflags_filter $flags)
1159     libs=$($ldflags_filter $libs)
1160     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1161 }
1162
1163 check_ld(){
1164     log check_ld "$@"
1165     type=$1
1166     name=$2
1167     shift 2
1168     disable $name
1169     test_ld $type $@ && enable $name
1170 }
1171
1172 print_include(){
1173     hdr=$1
1174     test "${hdr%.h}" = "${hdr}" &&
1175         echo "#include $hdr"    ||
1176         echo "#include <$hdr>"
1177 }
1178
1179 test_code(){
1180     log test_code "$@"
1181     check=$1
1182     headers=$2
1183     code=$3
1184     shift 3
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "int main(void) { $code; return 0; }"
1190     } | test_$check "$@"
1191 }
1192
1193 check_cppflags(){
1194     log check_cppflags "$@"
1195     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1196 #include <stdlib.h>
1197 EOF
1198 }
1199
1200 test_cflags(){
1201     log test_cflags "$@"
1202     set -- $($cflags_filter "$@")
1203     test_cc "$@" <<EOF
1204 int x;
1205 EOF
1206 }
1207
1208 check_cflags(){
1209     log check_cflags "$@"
1210     test_cflags "$@" && add_cflags "$@"
1211 }
1212
1213 check_cxxflags(){
1214     log check_cxxflags "$@"
1215     set -- $($cflags_filter "$@")
1216     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1217 int x;
1218 EOF
1219 }
1220
1221 test_objcflags(){
1222     log test_objcflags "$@"
1223     set -- $($objcflags_filter "$@")
1224     test_objcc "$@" <<EOF
1225 int x;
1226 EOF
1227 }
1228
1229 check_objcflags(){
1230     log check_objcflags "$@"
1231     test_objcflags "$@" && add_objcflags "$@"
1232 }
1233
1234 test_ldflags(){
1235     log test_ldflags "$@"
1236     set -- $($ldflags_filter "$@")
1237     test_ld "cc" "$@" <<EOF
1238 int main(void){ return 0; }
1239 EOF
1240 }
1241
1242 check_ldflags(){
1243     log check_ldflags "$@"
1244     test_ldflags "$@" && add_ldflags "$@"
1245 }
1246
1247 test_stripflags(){
1248     log test_stripflags "$@"
1249     # call test_cc to get a fresh TMPO
1250     test_cc <<EOF
1251 int main(void) { return 0; }
1252 EOF
1253     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1254 }
1255
1256 check_stripflags(){
1257     log check_stripflags "$@"
1258     test_stripflags "$@" && add_stripflags "$@"
1259 }
1260
1261 check_headers(){
1262     log check_headers "$@"
1263     headers=$1
1264     shift
1265     disable_sanitized $headers
1266     {
1267         for hdr in $headers; do
1268             print_include $hdr
1269         done
1270         echo "int x;"
1271     } | test_cpp "$@" && enable_sanitized $headers
1272 }
1273
1274 check_header_objcc(){
1275     log check_header_objcc "$@"
1276     rm -f -- "$TMPO"
1277     header=$1
1278     shift
1279     disable_sanitized $header
1280     {
1281        echo "#include <$header>"
1282        echo "int main(void) { return 0; }"
1283     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1284 }
1285
1286 check_apple_framework(){
1287     log check_apple_framework "$@"
1288     framework="$1"
1289     name="$(tolower $framework)"
1290     header="${framework}/${framework}.h"
1291     disable $name
1292     check_header_objcc $header &&
1293         enable $name && eval ${name}_extralibs='"-framework $framework"'
1294 }
1295
1296 check_func(){
1297     log check_func "$@"
1298     func=$1
1299     shift
1300     disable $func
1301     test_ld "cc" "$@" <<EOF && enable $func
1302 extern int $func();
1303 int main(void){ $func(); }
1304 EOF
1305 }
1306
1307 check_complexfunc(){
1308     log check_complexfunc "$@"
1309     func=$1
1310     narg=$2
1311     shift 2
1312     test $narg = 2 && args="f, g" || args="f * I"
1313     disable $func
1314     test_ld "cc" "$@" <<EOF && enable $func
1315 #include <complex.h>
1316 #include <math.h>
1317 float foo(complex float f, complex float g) { return $func($args); }
1318 int main(void){ return (int) foo; }
1319 EOF
1320 }
1321
1322 check_mathfunc(){
1323     log check_mathfunc "$@"
1324     func=$1
1325     narg=$2
1326     shift 2
1327     test $narg = 2 && args="f, g" || args="f"
1328     disable $func
1329     test_ld "cc" "$@" <<EOF && enable $func
1330 #include <math.h>
1331 float foo(float f, float g) { return $func($args); }
1332 int main(void){ return (int) foo; }
1333 EOF
1334 }
1335
1336 check_func_headers(){
1337     log check_func_headers "$@"
1338     headers=$1
1339     funcs=$2
1340     shift 2
1341     {
1342         for hdr in $headers; do
1343             print_include $hdr
1344         done
1345         echo "#include <stdint.h>"
1346         for func in $funcs; do
1347             echo "long check_$func(void) { return (long) $func; }"
1348         done
1349         echo "int main(void) { int ret = 0;"
1350         # LTO could optimize out the test functions without this
1351         for func in $funcs; do
1352             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1353         done
1354         echo "return ret; }"
1355     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1356 }
1357
1358 check_class_headers_cpp(){
1359     log check_class_headers_cpp "$@"
1360     headers=$1
1361     classes=$2
1362     shift 2
1363     {
1364         for hdr in $headers; do
1365             echo "#include <$hdr>"
1366         done
1367         echo "int main(void) { "
1368         i=1
1369         for class in $classes; do
1370             echo "$class obj$i;"
1371             i=$(expr $i + 1)
1372         done
1373         echo "return 0; }"
1374     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1375 }
1376
1377 test_cpp_condition(){
1378     log test_cpp_condition "$@"
1379     header=$1
1380     condition=$2
1381     shift 2
1382     test_cpp "$@" <<EOF
1383 #include <$header>
1384 #if !($condition)
1385 #error "unsatisfied condition: $condition"
1386 #endif
1387 EOF
1388 }
1389
1390 check_cpp_condition(){
1391     log check_cpp_condition "$@"
1392     name=$1
1393     shift 1
1394     disable $name
1395     test_cpp_condition "$@" && enable $name
1396 }
1397
1398 test_cflags_cc(){
1399     log test_cflags_cc "$@"
1400     flags=$1
1401     header=$2
1402     condition=$3
1403     shift 3
1404     set -- $($cflags_filter "$flags")
1405     test_cc "$@" <<EOF
1406 #include <$header>
1407 #if !($condition)
1408 #error "unsatisfied condition: $condition"
1409 #endif
1410 EOF
1411 }
1412
1413 check_lib(){
1414     log check_lib "$@"
1415     name="$1"
1416     headers="$2"
1417     funcs="$3"
1418     shift 3
1419     disable $name
1420     check_func_headers "$headers" "$funcs" "$@" &&
1421         enable $name && eval ${name}_extralibs="\$@"
1422 }
1423
1424 check_lib_cpp(){
1425     log check_lib_cpp "$@"
1426     name="$1"
1427     headers="$2"
1428     classes="$3"
1429     shift 3
1430     disable $name
1431     check_class_headers_cpp "$headers" "$classes" "$@" &&
1432         enable $name && eval ${name}_extralibs="\$@"
1433 }
1434
1435 test_pkg_config(){
1436     log test_pkg_config "$@"
1437     name="$1"
1438     pkg_version="$2"
1439     pkg="${2%% *}"
1440     headers="$3"
1441     funcs="$4"
1442     shift 4
1443     disable $name
1444     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1445     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1446     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1447     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1448         enable $name &&
1449         set_sanitized "${name}_cflags"    $pkg_cflags &&
1450         set_sanitized "${name}_extralibs" $pkg_libs
1451 }
1452
1453 check_pkg_config(){
1454     log check_pkg_config "$@"
1455     name="$1"
1456     test_pkg_config "$@" &&
1457         eval add_cflags \$${name}_cflags
1458 }
1459
1460 test_exec(){
1461     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1462 }
1463
1464 check_exec_crash(){
1465     log check_exec_crash "$@"
1466     code=$(cat)
1467
1468     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1469     # are safe but may not be available everywhere.  Thus we use
1470     # raise(SIGTERM) instead.  The check is run in a subshell so we
1471     # can redirect the "Terminated" message from the shell.  SIGBUS
1472     # is not defined by standard C so it is used conditionally.
1473
1474     (test_exec "$@") >> $logfile 2>&1 <<EOF
1475 #include <signal.h>
1476 static void sighandler(int sig){
1477     raise(SIGTERM);
1478 }
1479 int foo(void){
1480     $code
1481 }
1482 int (*func_ptr)(void) = foo;
1483 int main(void){
1484     signal(SIGILL, sighandler);
1485     signal(SIGFPE, sighandler);
1486     signal(SIGSEGV, sighandler);
1487 #ifdef SIGBUS
1488     signal(SIGBUS, sighandler);
1489 #endif
1490     return func_ptr();
1491 }
1492 EOF
1493 }
1494
1495 check_type(){
1496     log check_type "$@"
1497     headers=$1
1498     type=$2
1499     shift 2
1500     disable_sanitized "$type"
1501     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1502 }
1503
1504 check_struct(){
1505     log check_struct "$@"
1506     headers=$1
1507     struct=$2
1508     member=$3
1509     shift 3
1510     disable_sanitized "${struct}_${member}"
1511     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1512         enable_sanitized "${struct}_${member}"
1513 }
1514
1515 check_builtin(){
1516     log check_builtin "$@"
1517     name=$1
1518     headers=$2
1519     builtin=$3
1520     shift 3
1521     disable "$name"
1522     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1523 }
1524
1525 check_compile_assert(){
1526     log check_compile_assert "$@"
1527     name=$1
1528     headers=$2
1529     condition=$3
1530     shift 3
1531     disable "$name"
1532     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1533 }
1534
1535 check_cc(){
1536     log check_cc "$@"
1537     name=$1
1538     shift
1539     disable "$name"
1540     test_code cc "$@" && enable "$name"
1541 }
1542
1543 require(){
1544     log require "$@"
1545     name_version="$1"
1546     name="${1%% *}"
1547     shift
1548     check_lib $name "$@" || die "ERROR: $name_version not found"
1549 }
1550
1551 require_cc(){
1552     log require_cc "$@"
1553     name="$1"
1554     check_cc "$@" || die "ERROR: $name failed"
1555 }
1556
1557 require_cpp(){
1558     log require_cpp "$@"
1559     name_version="$1"
1560     name="${1%% *}"
1561     shift
1562     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1563 }
1564
1565 require_headers(){
1566     log require_headers "$@"
1567     headers="$1"
1568     check_headers "$@" || die "ERROR: $headers not found"
1569 }
1570
1571 require_cpp_condition(){
1572     log require_cpp_condition "$@"
1573     condition="$3"
1574     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1575 }
1576
1577 require_pkg_config(){
1578     log require_pkg_config "$@"
1579     pkg_version="$2"
1580     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1581 }
1582
1583 test_host_cc(){
1584     log test_host_cc "$@"
1585     cat > $TMPC
1586     log_file $TMPC
1587     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1588 }
1589
1590 test_host_cpp(){
1591     log test_host_cpp "$@"
1592     cat > $TMPC
1593     log_file $TMPC
1594     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1595 }
1596
1597 check_host_cppflags(){
1598     log check_host_cppflags "$@"
1599     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1600 #include <stdlib.h>
1601 EOF
1602 }
1603
1604 check_host_cflags(){
1605     log check_host_cflags "$@"
1606     set -- $($host_cflags_filter "$@")
1607     test_host_cc "$@" <<EOF && append host_cflags "$@"
1608 int x;
1609 EOF
1610 }
1611
1612 test_host_cpp_condition(){
1613     log test_host_cpp_condition "$@"
1614     header=$1
1615     condition=$2
1616     shift 2
1617     test_host_cpp "$@" <<EOF
1618 #include <$header>
1619 #if !($condition)
1620 #error "unsatisfied condition: $condition"
1621 #endif
1622 EOF
1623 }
1624
1625 check_host_cpp_condition(){
1626     log check_host_cpp_condition "$@"
1627     name=$1
1628     shift 1
1629     disable $name
1630     test_host_cpp_condition "$@" && enable $name
1631 }
1632
1633 cp_if_changed(){
1634     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1635     mkdir -p "$(dirname $2)"
1636     cp -f "$1" "$2"
1637 }
1638
1639 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1640 # system-dependent things.
1641
1642 AVCODEC_COMPONENTS="
1643     bsfs
1644     decoders
1645     encoders
1646     hwaccels
1647     parsers
1648 "
1649
1650 AVDEVICE_COMPONENTS="
1651     indevs
1652     outdevs
1653 "
1654
1655 AVFILTER_COMPONENTS="
1656     filters
1657 "
1658
1659 AVFORMAT_COMPONENTS="
1660     demuxers
1661     muxers
1662     protocols
1663 "
1664
1665 COMPONENT_LIST="
1666     $AVCODEC_COMPONENTS
1667     $AVDEVICE_COMPONENTS
1668     $AVFILTER_COMPONENTS
1669     $AVFORMAT_COMPONENTS
1670 "
1671
1672 EXAMPLE_LIST="
1673     avio_list_dir_example
1674     avio_reading_example
1675     decode_audio_example
1676     decode_video_example
1677     demuxing_decoding_example
1678     encode_audio_example
1679     encode_video_example
1680     extract_mvs_example
1681     filter_audio_example
1682     filtering_audio_example
1683     filtering_video_example
1684     http_multiclient_example
1685     hw_decode_example
1686     metadata_example
1687     muxing_example
1688     qsvdec_example
1689     remuxing_example
1690     resampling_audio_example
1691     scaling_video_example
1692     transcode_aac_example
1693     transcoding_example
1694     vaapi_encode_example
1695     vaapi_transcode_example
1696 "
1697
1698 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1699     alsa
1700     appkit
1701     avfoundation
1702     bzlib
1703     coreimage
1704     iconv
1705     libxcb
1706     libxcb_shm
1707     libxcb_shape
1708     libxcb_xfixes
1709     lzma
1710     mediafoundation
1711     schannel
1712     sdl2
1713     securetransport
1714     sndio
1715     xlib
1716     zlib
1717 "
1718
1719 EXTERNAL_LIBRARY_GPL_LIST="
1720     avisynth
1721     frei0r
1722     libcdio
1723     libdavs2
1724     librubberband
1725     libvidstab
1726     libx264
1727     libx265
1728     libxavs
1729     libxavs2
1730     libxvid
1731 "
1732
1733 EXTERNAL_LIBRARY_NONFREE_LIST="
1734     decklink
1735     libfdk_aac
1736     openssl
1737     libtls
1738 "
1739
1740 EXTERNAL_LIBRARY_VERSION3_LIST="
1741     gmp
1742     libaribb24
1743     liblensfun
1744     libopencore_amrnb
1745     libopencore_amrwb
1746     libvo_amrwbenc
1747     mbedtls
1748     rkmpp
1749 "
1750
1751 EXTERNAL_LIBRARY_GPLV3_LIST="
1752     libsmbclient
1753 "
1754
1755 EXTERNAL_LIBRARY_LIST="
1756     $EXTERNAL_LIBRARY_GPL_LIST
1757     $EXTERNAL_LIBRARY_NONFREE_LIST
1758     $EXTERNAL_LIBRARY_VERSION3_LIST
1759     $EXTERNAL_LIBRARY_GPLV3_LIST
1760     chromaprint
1761     gcrypt
1762     gnutls
1763     jni
1764     ladspa
1765     libaom
1766     libass
1767     libbluray
1768     libbs2b
1769     libcaca
1770     libcelt
1771     libcodec2
1772     libdav1d
1773     libdc1394
1774     libdrm
1775     libflite
1776     libfontconfig
1777     libfreetype
1778     libfribidi
1779     libglslang
1780     libgme
1781     libgsm
1782     libiec61883
1783     libilbc
1784     libjack
1785     libklvanc
1786     libkvazaar
1787     libmodplug
1788     libmp3lame
1789     libmysofa
1790     libopencv
1791     libopenh264
1792     libopenjpeg
1793     libopenmpt
1794     libopenvino
1795     libopus
1796     libpulse
1797     librabbitmq
1798     librav1e
1799     librsvg
1800     librtmp
1801     libshine
1802     libsmbclient
1803     libsnappy
1804     libsoxr
1805     libspeex
1806     libsrt
1807     libssh
1808     libsvtav1
1809     libtensorflow
1810     libtesseract
1811     libtheora
1812     libtwolame
1813     libv4l2
1814     libvmaf
1815     libvorbis
1816     libvpx
1817     libwebp
1818     libxml2
1819     libzimg
1820     libzmq
1821     libzvbi
1822     lv2
1823     mediacodec
1824     openal
1825     opengl
1826     pocketsphinx
1827     vapoursynth
1828 "
1829
1830 HWACCEL_AUTODETECT_LIBRARY_LIST="
1831     amf
1832     audiotoolbox
1833     crystalhd
1834     cuda
1835     cuda_llvm
1836     cuvid
1837     d3d11va
1838     dxva2
1839     ffnvcodec
1840     nvdec
1841     nvenc
1842     vaapi
1843     vdpau
1844     videotoolbox
1845     v4l2_m2m
1846     xvmc
1847 "
1848
1849 # catchall list of things that require external libs to link
1850 EXTRALIBS_LIST="
1851     cpu_init
1852     cws2fws
1853 "
1854
1855 HWACCEL_LIBRARY_NONFREE_LIST="
1856     cuda_nvcc
1857     cuda_sdk
1858     libnpp
1859 "
1860
1861 HWACCEL_LIBRARY_LIST="
1862     $HWACCEL_LIBRARY_NONFREE_LIST
1863     libmfx
1864     mmal
1865     omx
1866     opencl
1867     vulkan
1868 "
1869
1870 DOCUMENT_LIST="
1871     doc
1872     htmlpages
1873     manpages
1874     podpages
1875     txtpages
1876 "
1877
1878 FEATURE_LIST="
1879     ftrapv
1880     gray
1881     hardcoded_tables
1882     omx_rpi
1883     runtime_cpudetect
1884     safe_bitstream_reader
1885     shared
1886     small
1887     static
1888     swscale_alpha
1889 "
1890
1891 # this list should be kept in linking order
1892 LIBRARY_LIST="
1893     avdevice
1894     avfilter
1895     swscale
1896     postproc
1897     avformat
1898     avcodec
1899     swresample
1900     avresample
1901     avutil
1902 "
1903
1904 LICENSE_LIST="
1905     gpl
1906     nonfree
1907     version3
1908 "
1909
1910 PROGRAM_LIST="
1911     ffplay
1912     ffprobe
1913     ffmpeg
1914 "
1915
1916 SUBSYSTEM_LIST="
1917     dct
1918     dwt
1919     error_resilience
1920     faan
1921     fast_unaligned
1922     fft
1923     lsp
1924     lzo
1925     mdct
1926     pixelutils
1927     network
1928     rdft
1929 "
1930
1931 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1932 CONFIG_LIST="
1933     $DOCUMENT_LIST
1934     $EXAMPLE_LIST
1935     $EXTERNAL_LIBRARY_LIST
1936     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1937     $HWACCEL_LIBRARY_LIST
1938     $HWACCEL_AUTODETECT_LIBRARY_LIST
1939     $FEATURE_LIST
1940     $LICENSE_LIST
1941     $LIBRARY_LIST
1942     $PROGRAM_LIST
1943     $SUBSYSTEM_LIST
1944     autodetect
1945     fontconfig
1946     large_tests
1947     linux_perf
1948     memory_poisoning
1949     neon_clobber_test
1950     ossfuzz
1951     pic
1952     thumb
1953     valgrind_backtrace
1954     xmm_clobber_test
1955     $COMPONENT_LIST
1956 "
1957
1958 THREADS_LIST="
1959     pthreads
1960     os2threads
1961     w32threads
1962 "
1963
1964 ATOMICS_LIST="
1965     atomics_gcc
1966     atomics_suncc
1967     atomics_win32
1968 "
1969
1970 AUTODETECT_LIBS="
1971     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1972     $HWACCEL_AUTODETECT_LIBRARY_LIST
1973     $THREADS_LIST
1974 "
1975
1976 ARCH_LIST="
1977     aarch64
1978     alpha
1979     arm
1980     avr32
1981     avr32_ap
1982     avr32_uc
1983     bfin
1984     ia64
1985     m68k
1986     mips
1987     mips64
1988     parisc
1989     ppc
1990     ppc64
1991     s390
1992     sh4
1993     sparc
1994     sparc64
1995     tilegx
1996     tilepro
1997     tomi
1998     x86
1999     x86_32
2000     x86_64
2001 "
2002
2003 ARCH_EXT_LIST_ARM="
2004     armv5te
2005     armv6
2006     armv6t2
2007     armv8
2008     neon
2009     vfp
2010     vfpv3
2011     setend
2012 "
2013
2014 ARCH_EXT_LIST_MIPS="
2015     mipsfpu
2016     mips32r2
2017     mips32r5
2018     mips64r2
2019     mips32r6
2020     mips64r6
2021     mipsdsp
2022     mipsdspr2
2023     msa
2024     msa2
2025 "
2026
2027 ARCH_EXT_LIST_LOONGSON="
2028     loongson2
2029     loongson3
2030     mmi
2031 "
2032
2033 ARCH_EXT_LIST_X86_SIMD="
2034     aesni
2035     amd3dnow
2036     amd3dnowext
2037     avx
2038     avx2
2039     avx512
2040     fma3
2041     fma4
2042     mmx
2043     mmxext
2044     sse
2045     sse2
2046     sse3
2047     sse4
2048     sse42
2049     ssse3
2050     xop
2051 "
2052
2053 ARCH_EXT_LIST_PPC="
2054     altivec
2055     dcbzl
2056     ldbrx
2057     power8
2058     ppc4xx
2059     vsx
2060 "
2061
2062 ARCH_EXT_LIST_X86="
2063     $ARCH_EXT_LIST_X86_SIMD
2064     cpunop
2065     i686
2066 "
2067
2068 ARCH_EXT_LIST="
2069     $ARCH_EXT_LIST_ARM
2070     $ARCH_EXT_LIST_PPC
2071     $ARCH_EXT_LIST_X86
2072     $ARCH_EXT_LIST_MIPS
2073     $ARCH_EXT_LIST_LOONGSON
2074 "
2075
2076 ARCH_FEATURES="
2077     aligned_stack
2078     fast_64bit
2079     fast_clz
2080     fast_cmov
2081     local_aligned
2082     simd_align_16
2083     simd_align_32
2084     simd_align_64
2085 "
2086
2087 BUILTIN_LIST="
2088     atomic_cas_ptr
2089     machine_rw_barrier
2090     MemoryBarrier
2091     mm_empty
2092     rdtsc
2093     sem_timedwait
2094     sync_val_compare_and_swap
2095 "
2096 HAVE_LIST_CMDLINE="
2097     inline_asm
2098     symver
2099     x86asm
2100 "
2101
2102 HAVE_LIST_PUB="
2103     bigendian
2104     fast_unaligned
2105 "
2106
2107 HEADERS_LIST="
2108     arpa_inet_h
2109     asm_types_h
2110     cdio_paranoia_h
2111     cdio_paranoia_paranoia_h
2112     cuda_h
2113     dispatch_dispatch_h
2114     dev_bktr_ioctl_bt848_h
2115     dev_bktr_ioctl_meteor_h
2116     dev_ic_bt8xx_h
2117     dev_video_bktr_ioctl_bt848_h
2118     dev_video_meteor_ioctl_meteor_h
2119     direct_h
2120     dirent_h
2121     dxgidebug_h
2122     dxva_h
2123     ES2_gl_h
2124     gsm_h
2125     io_h
2126     linux_perf_event_h
2127     machine_ioctl_bt848_h
2128     machine_ioctl_meteor_h
2129     malloc_h
2130     opencv2_core_core_c_h
2131     OpenGL_gl3_h
2132     poll_h
2133     sys_param_h
2134     sys_resource_h
2135     sys_select_h
2136     sys_soundcard_h
2137     sys_time_h
2138     sys_un_h
2139     sys_videoio_h
2140     termios_h
2141     udplite_h
2142     unistd_h
2143     valgrind_valgrind_h
2144     windows_h
2145     winsock2_h
2146 "
2147
2148 INTRINSICS_LIST="
2149     intrinsics_neon
2150 "
2151
2152 COMPLEX_FUNCS="
2153     cabs
2154     cexp
2155 "
2156
2157 MATH_FUNCS="
2158     atanf
2159     atan2f
2160     cbrt
2161     cbrtf
2162     copysign
2163     cosf
2164     erf
2165     exp2
2166     exp2f
2167     expf
2168     hypot
2169     isfinite
2170     isinf
2171     isnan
2172     ldexpf
2173     llrint
2174     llrintf
2175     log2
2176     log2f
2177     log10f
2178     lrint
2179     lrintf
2180     powf
2181     rint
2182     round
2183     roundf
2184     sinf
2185     trunc
2186     truncf
2187 "
2188
2189 SYSTEM_FEATURES="
2190     dos_paths
2191     libc_msvcrt
2192     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2193     section_data_rel_ro
2194     threads
2195     uwp
2196     winrt
2197 "
2198
2199 SYSTEM_FUNCS="
2200     access
2201     aligned_malloc
2202     arc4random
2203     clock_gettime
2204     closesocket
2205     CommandLineToArgvW
2206     fcntl
2207     getaddrinfo
2208     gethrtime
2209     getopt
2210     GetModuleHandle
2211     GetProcessAffinityMask
2212     GetProcessMemoryInfo
2213     GetProcessTimes
2214     getrusage
2215     GetStdHandle
2216     GetSystemTimeAsFileTime
2217     gettimeofday
2218     glob
2219     glXGetProcAddress
2220     gmtime_r
2221     inet_aton
2222     isatty
2223     kbhit
2224     localtime_r
2225     lstat
2226     lzo1x_999_compress
2227     mach_absolute_time
2228     MapViewOfFile
2229     memalign
2230     mkstemp
2231     mmap
2232     mprotect
2233     nanosleep
2234     PeekNamedPipe
2235     posix_memalign
2236     pthread_cancel
2237     sched_getaffinity
2238     SecItemImport
2239     SetConsoleTextAttribute
2240     SetConsoleCtrlHandler
2241     SetDllDirectory
2242     setmode
2243     setrlimit
2244     Sleep
2245     strerror_r
2246     sysconf
2247     sysctl
2248     usleep
2249     UTGetOSTypeFromString
2250     VirtualAlloc
2251     wglGetProcAddress
2252 "
2253
2254 SYSTEM_LIBRARIES="
2255     bcrypt
2256     vaapi_drm
2257     vaapi_x11
2258     vdpau_x11
2259 "
2260
2261 TOOLCHAIN_FEATURES="
2262     as_arch_directive
2263     as_dn_directive
2264     as_fpu_directive
2265     as_func
2266     as_object_arch
2267     asm_mod_q
2268     blocks_extension
2269     ebp_available
2270     ebx_available
2271     gnu_as
2272     gnu_windres
2273     ibm_asm
2274     inline_asm_direct_symbol_refs
2275     inline_asm_labels
2276     inline_asm_nonlocal_labels
2277     pragma_deprecated
2278     rsync_contimeout
2279     symver_asm_label
2280     symver_gnu_asm
2281     vfp_args
2282     xform_asm
2283     xmm_clobbers
2284 "
2285
2286 TYPES_LIST="
2287     kCMVideoCodecType_HEVC
2288     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2289     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2290     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2291     kCVImageBufferTransferFunction_Linear
2292     socklen_t
2293     struct_addrinfo
2294     struct_group_source_req
2295     struct_ip_mreq_source
2296     struct_ipv6_mreq
2297     struct_msghdr_msg_flags
2298     struct_pollfd
2299     struct_rusage_ru_maxrss
2300     struct_sctp_event_subscribe
2301     struct_sockaddr_in6
2302     struct_sockaddr_sa_len
2303     struct_sockaddr_storage
2304     struct_stat_st_mtim_tv_nsec
2305     struct_v4l2_frmivalenum_discrete
2306 "
2307
2308 HAVE_LIST="
2309     $ARCH_EXT_LIST
2310     $(add_suffix _external $ARCH_EXT_LIST)
2311     $(add_suffix _inline   $ARCH_EXT_LIST)
2312     $ARCH_FEATURES
2313     $BUILTIN_LIST
2314     $COMPLEX_FUNCS
2315     $HAVE_LIST_CMDLINE
2316     $HAVE_LIST_PUB
2317     $HEADERS_LIST
2318     $INTRINSICS_LIST
2319     $MATH_FUNCS
2320     $SYSTEM_FEATURES
2321     $SYSTEM_FUNCS
2322     $SYSTEM_LIBRARIES
2323     $THREADS_LIST
2324     $TOOLCHAIN_FEATURES
2325     $TYPES_LIST
2326     libdrm_getfb2
2327     makeinfo
2328     makeinfo_html
2329     opencl_d3d11
2330     opencl_drm_arm
2331     opencl_drm_beignet
2332     opencl_dxva2
2333     opencl_vaapi_beignet
2334     opencl_vaapi_intel_media
2335     perl
2336     pod2man
2337     texi2html
2338 "
2339
2340 # options emitted with CONFIG_ prefix but not available on the command line
2341 CONFIG_EXTRA="
2342     aandcttables
2343     ac3dsp
2344     adts_header
2345     atsc_a53
2346     audio_frame_queue
2347     audiodsp
2348     blockdsp
2349     bswapdsp
2350     cabac
2351     cbs
2352     cbs_av1
2353     cbs_h264
2354     cbs_h265
2355     cbs_jpeg
2356     cbs_mpeg2
2357     cbs_vp9
2358     dirac_parse
2359     dnn
2360     dvprofile
2361     exif
2362     faandct
2363     faanidct
2364     fdctdsp
2365     flacdsp
2366     fmtconvert
2367     frame_thread_encoder
2368     g722dsp
2369     golomb
2370     gplv3
2371     h263dsp
2372     h264chroma
2373     h264dsp
2374     h264parse
2375     h264pred
2376     h264qpel
2377     hevcparse
2378     hpeldsp
2379     huffman
2380     huffyuvdsp
2381     huffyuvencdsp
2382     idctdsp
2383     iirfilter
2384     mdct15
2385     intrax8
2386     iso_media
2387     ividsp
2388     jpegtables
2389     lgplv3
2390     libx262
2391     llauddsp
2392     llviddsp
2393     llvidencdsp
2394     lpc
2395     lzf
2396     me_cmp
2397     mpeg_er
2398     mpegaudio
2399     mpegaudiodsp
2400     mpegaudioheader
2401     mpegvideo
2402     mpegvideoenc
2403     mss34dsp
2404     pixblockdsp
2405     qpeldsp
2406     qsv
2407     qsvdec
2408     qsvenc
2409     qsvvpp
2410     rangecoder
2411     riffdec
2412     riffenc
2413     rtpdec
2414     rtpenc_chain
2415     rv34dsp
2416     scene_sad
2417     sinewin
2418     snappy
2419     srtp
2420     startcode
2421     texturedsp
2422     texturedspenc
2423     tpeldsp
2424     vaapi_1
2425     vaapi_encode
2426     vc1dsp
2427     videodsp
2428     vp3dsp
2429     vp56dsp
2430     vp8dsp
2431     wma_freqs
2432     wmv2dsp
2433 "
2434
2435 CMDLINE_SELECT="
2436     $ARCH_EXT_LIST
2437     $CONFIG_LIST
2438     $HAVE_LIST_CMDLINE
2439     $THREADS_LIST
2440     asm
2441     cross_compile
2442     debug
2443     extra_warnings
2444     logging
2445     lto
2446     optimizations
2447     rpath
2448     stripping
2449 "
2450
2451 PATHS_LIST="
2452     bindir
2453     datadir
2454     docdir
2455     incdir
2456     libdir
2457     mandir
2458     pkgconfigdir
2459     prefix
2460     shlibdir
2461     install_name_dir
2462 "
2463
2464 CMDLINE_SET="
2465     $PATHS_LIST
2466     ar
2467     arch
2468     as
2469     assert_level
2470     build_suffix
2471     cc
2472     objcc
2473     cpu
2474     cross_prefix
2475     custom_allocator
2476     cxx
2477     dep_cc
2478     doxygen
2479     env
2480     extra_version
2481     gas
2482     host_cc
2483     host_cflags
2484     host_extralibs
2485     host_ld
2486     host_ldflags
2487     host_os
2488     ignore_tests
2489     install
2490     ld
2491     ln_s
2492     logfile
2493     malloc_prefix
2494     nm
2495     optflags
2496     nvcc
2497     nvccflags
2498     pkg_config
2499     pkg_config_flags
2500     progs_suffix
2501     random_seed
2502     ranlib
2503     samples
2504     strip
2505     sws_max_filter_size
2506     sysinclude
2507     sysroot
2508     target_exec
2509     target_os
2510     target_path
2511     target_samples
2512     tempprefix
2513     toolchain
2514     valgrind
2515     windres
2516     x86asmexe
2517 "
2518
2519 CMDLINE_APPEND="
2520     extra_cflags
2521     extra_cxxflags
2522     extra_objcflags
2523     host_cppflags
2524 "
2525
2526 # code dependency declarations
2527
2528 # architecture extensions
2529
2530 armv5te_deps="arm"
2531 armv6_deps="arm"
2532 armv6t2_deps="arm"
2533 armv8_deps="aarch64"
2534 neon_deps_any="aarch64 arm"
2535 intrinsics_neon_deps="neon"
2536 vfp_deps_any="aarch64 arm"
2537 vfpv3_deps="vfp"
2538 setend_deps="arm"
2539
2540 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2541
2542 altivec_deps="ppc"
2543 dcbzl_deps="ppc"
2544 ldbrx_deps="ppc"
2545 ppc4xx_deps="ppc"
2546 vsx_deps="altivec"
2547 power8_deps="vsx"
2548
2549 loongson2_deps="mips"
2550 loongson3_deps="mips"
2551 mips32r2_deps="mips"
2552 mips32r5_deps="mips"
2553 mips32r6_deps="mips"
2554 mips64r2_deps="mips"
2555 mips64r6_deps="mips"
2556 mipsfpu_deps="mips"
2557 mipsdsp_deps="mips"
2558 mipsdspr2_deps="mips"
2559 mmi_deps_any="loongson2 loongson3"
2560 msa_deps="mipsfpu"
2561 msa2_deps="msa"
2562
2563 cpunop_deps="i686"
2564 x86_64_select="i686"
2565 x86_64_suggest="fast_cmov"
2566
2567 amd3dnow_deps="mmx"
2568 amd3dnowext_deps="amd3dnow"
2569 i686_deps="x86"
2570 mmx_deps="x86"
2571 mmxext_deps="mmx"
2572 sse_deps="mmxext"
2573 sse2_deps="sse"
2574 sse3_deps="sse2"
2575 ssse3_deps="sse3"
2576 sse4_deps="ssse3"
2577 sse42_deps="sse4"
2578 aesni_deps="sse42"
2579 avx_deps="sse42"
2580 xop_deps="avx"
2581 fma3_deps="avx"
2582 fma4_deps="avx"
2583 avx2_deps="avx"
2584 avx512_deps="avx2"
2585
2586 mmx_external_deps="x86asm"
2587 mmx_inline_deps="inline_asm x86"
2588 mmx_suggest="mmx_external mmx_inline"
2589
2590 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2591     eval dep=\$${ext}_deps
2592     eval ${ext}_external_deps='"${dep}_external"'
2593     eval ${ext}_inline_deps='"${dep}_inline"'
2594     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2595 done
2596
2597 aligned_stack_if_any="aarch64 ppc x86"
2598 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2599 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2600 fast_unaligned_if_any="aarch64 ppc x86"
2601 simd_align_16_if_any="altivec neon sse"
2602 simd_align_32_if_any="avx"
2603 simd_align_64_if_any="avx512"
2604
2605 # system capabilities
2606 linux_perf_deps="linux_perf_event_h"
2607 symver_if_any="symver_asm_label symver_gnu_asm"
2608 valgrind_backtrace_conflict="optimizations"
2609 valgrind_backtrace_deps="valgrind_valgrind_h"
2610
2611 # threading support
2612 atomics_gcc_if="sync_val_compare_and_swap"
2613 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2614 atomics_win32_if="MemoryBarrier"
2615 atomics_native_if_any="$ATOMICS_LIST"
2616 w32threads_deps="atomics_native"
2617 threads_if_any="$THREADS_LIST"
2618
2619 # subsystems
2620 cbs_av1_select="cbs"
2621 cbs_h264_select="cbs"
2622 cbs_h265_select="cbs"
2623 cbs_jpeg_select="cbs"
2624 cbs_mpeg2_select="cbs"
2625 cbs_vp9_select="cbs"
2626 dct_select="rdft"
2627 dirac_parse_select="golomb"
2628 dnn_suggest="libtensorflow libopenvino"
2629 dnn_deps="swscale"
2630 error_resilience_select="me_cmp"
2631 faandct_deps="faan"
2632 faandct_select="fdctdsp"
2633 faanidct_deps="faan"
2634 faanidct_select="idctdsp"
2635 h264dsp_select="startcode"
2636 hevcparse_select="golomb"
2637 frame_thread_encoder_deps="encoders threads"
2638 intrax8_select="blockdsp idctdsp"
2639 mdct_select="fft"
2640 mdct15_select="fft"
2641 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2642 mpeg_er_select="error_resilience"
2643 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2644 mpegaudiodsp_select="dct"
2645 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2646 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2647 vc1dsp_select="h264chroma qpeldsp startcode"
2648 rdft_select="fft"
2649
2650 # decoders / encoders
2651 aac_decoder_select="adts_header mdct15 mdct sinewin"
2652 aac_fixed_decoder_select="adts_header mdct sinewin"
2653 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2654 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2655 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2656 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2657 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2658 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 acelp_kelvin_decoder_select="audiodsp"
2660 adpcm_g722_decoder_select="g722dsp"
2661 adpcm_g722_encoder_select="g722dsp"
2662 aic_decoder_select="golomb idctdsp"
2663 alac_encoder_select="lpc"
2664 als_decoder_select="bswapdsp"
2665 amrnb_decoder_select="lsp"
2666 amrwb_decoder_select="lsp"
2667 amv_decoder_select="sp5x_decoder exif"
2668 amv_encoder_select="jpegtables mpegvideoenc"
2669 ape_decoder_select="bswapdsp llauddsp"
2670 apng_decoder_deps="zlib"
2671 apng_encoder_deps="zlib"
2672 apng_encoder_select="llvidencdsp"
2673 aptx_decoder_select="audio_frame_queue"
2674 aptx_encoder_select="audio_frame_queue"
2675 aptx_hd_decoder_select="audio_frame_queue"
2676 aptx_hd_encoder_select="audio_frame_queue"
2677 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2678 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2679 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 atrac1_decoder_select="mdct sinewin"
2682 atrac3_decoder_select="mdct"
2683 atrac3al_decoder_select="mdct"
2684 atrac3p_decoder_select="mdct sinewin"
2685 atrac3pal_decoder_select="mdct sinewin"
2686 atrac9_decoder_select="mdct"
2687 av1_decoder_select="cbs_av1"
2688 avrn_decoder_select="exif jpegtables"
2689 bink_decoder_select="blockdsp hpeldsp"
2690 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2691 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2692 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2693 clearvideo_decoder_select="idctdsp"
2694 cllc_decoder_select="bswapdsp"
2695 comfortnoise_encoder_select="lpc"
2696 cook_decoder_select="audiodsp mdct sinewin"
2697 cscd_decoder_select="lzo"
2698 cscd_decoder_suggest="zlib"
2699 dca_decoder_select="mdct"
2700 dca_encoder_select="mdct"
2701 dds_decoder_select="texturedsp"
2702 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2703 dnxhd_decoder_select="blockdsp idctdsp"
2704 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2705 dolby_e_decoder_select="mdct"
2706 dvvideo_decoder_select="dvprofile idctdsp"
2707 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2708 dxa_decoder_deps="zlib"
2709 dxv_decoder_select="lzf texturedsp"
2710 eac3_decoder_select="ac3_decoder"
2711 eac3_encoder_select="ac3_encoder"
2712 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2713 eatgq_decoder_select="aandcttables"
2714 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2715 exr_decoder_deps="zlib"
2716 ffv1_decoder_select="rangecoder"
2717 ffv1_encoder_select="rangecoder"
2718 ffvhuff_decoder_select="huffyuv_decoder"
2719 ffvhuff_encoder_select="huffyuv_encoder"
2720 fic_decoder_select="golomb"
2721 flac_decoder_select="flacdsp"
2722 flac_encoder_select="bswapdsp flacdsp lpc"
2723 flashsv2_decoder_deps="zlib"
2724 flashsv2_encoder_deps="zlib"
2725 flashsv_decoder_deps="zlib"
2726 flashsv_encoder_deps="zlib"
2727 flv_decoder_select="h263_decoder"
2728 flv_encoder_select="h263_encoder"
2729 fourxm_decoder_select="blockdsp bswapdsp"
2730 fraps_decoder_select="bswapdsp huffman"
2731 g2m_decoder_deps="zlib"
2732 g2m_decoder_select="blockdsp idctdsp jpegtables"
2733 g729_decoder_select="audiodsp"
2734 h261_decoder_select="mpegvideo"
2735 h261_encoder_select="mpegvideoenc"
2736 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2737 h263_encoder_select="h263dsp mpegvideoenc"
2738 h263i_decoder_select="h263_decoder"
2739 h263p_decoder_select="h263_decoder"
2740 h263p_encoder_select="h263_encoder"
2741 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2742 h264_decoder_suggest="error_resilience"
2743 hap_decoder_select="snappy texturedsp"
2744 hap_encoder_deps="libsnappy"
2745 hap_encoder_select="texturedspenc"
2746 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2747 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2748 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2749 hymt_decoder_select="huffyuv_decoder"
2750 iac_decoder_select="imc_decoder"
2751 imc_decoder_select="bswapdsp fft mdct sinewin"
2752 imm4_decoder_select="bswapdsp"
2753 imm5_decoder_select="h264_decoder hevc_decoder"
2754 indeo3_decoder_select="hpeldsp"
2755 indeo4_decoder_select="ividsp"
2756 indeo5_decoder_select="ividsp"
2757 interplay_video_decoder_select="hpeldsp"
2758 jpegls_decoder_select="mjpeg_decoder"
2759 jv_decoder_select="blockdsp"
2760 lagarith_decoder_select="llviddsp"
2761 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2762 lscr_decoder_deps="zlib"
2763 magicyuv_decoder_select="llviddsp"
2764 magicyuv_encoder_select="llvidencdsp"
2765 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2766 metasound_decoder_select="lsp mdct sinewin"
2767 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2768 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2769 mjpeg_encoder_select="jpegtables mpegvideoenc"
2770 mjpegb_decoder_select="mjpeg_decoder"
2771 mlp_decoder_select="mlp_parser"
2772 mlp_encoder_select="lpc audio_frame_queue"
2773 mobiclip_decoder_select="bswapdsp golomb"
2774 motionpixels_decoder_select="bswapdsp"
2775 mp1_decoder_select="mpegaudio"
2776 mp1float_decoder_select="mpegaudio"
2777 mp2_decoder_select="mpegaudio"
2778 mp2float_decoder_select="mpegaudio"
2779 mp3_decoder_select="mpegaudio"
2780 mp3adu_decoder_select="mpegaudio"
2781 mp3adufloat_decoder_select="mpegaudio"
2782 mp3float_decoder_select="mpegaudio"
2783 mp3on4_decoder_select="mpegaudio"
2784 mp3on4float_decoder_select="mpegaudio"
2785 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2786 mpc8_decoder_select="mpegaudiodsp"
2787 mpegvideo_decoder_select="mpegvideo"
2788 mpeg1video_decoder_select="mpegvideo"
2789 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2790 mpeg2video_decoder_select="mpegvideo"
2791 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2792 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2793 mpeg4_encoder_select="h263_encoder"
2794 msa1_decoder_select="mss34dsp"
2795 mscc_decoder_deps="zlib"
2796 msmpeg4v1_decoder_select="h263_decoder"
2797 msmpeg4v2_decoder_select="h263_decoder"
2798 msmpeg4v2_encoder_select="h263_encoder"
2799 msmpeg4v3_decoder_select="h263_decoder"
2800 msmpeg4v3_encoder_select="h263_encoder"
2801 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2802 mts2_decoder_select="mss34dsp"
2803 mv30_decoder_select="aandcttables blockdsp"
2804 mvha_decoder_deps="zlib"
2805 mvha_decoder_select="llviddsp"
2806 mwsc_decoder_deps="zlib"
2807 mxpeg_decoder_select="mjpeg_decoder"
2808 nellymoser_decoder_select="mdct sinewin"
2809 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2810 notchlc_decoder_select="lzf"
2811 nuv_decoder_select="idctdsp lzo"
2812 on2avc_decoder_select="mdct"
2813 opus_decoder_deps="swresample"
2814 opus_decoder_select="mdct15"
2815 opus_encoder_select="audio_frame_queue mdct15"
2816 png_decoder_deps="zlib"
2817 png_encoder_deps="zlib"
2818 png_encoder_select="llvidencdsp"
2819 prores_decoder_select="blockdsp idctdsp"
2820 prores_encoder_select="fdctdsp"
2821 qcelp_decoder_select="lsp"
2822 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2823 ra_144_decoder_select="audiodsp"
2824 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2825 ralf_decoder_select="golomb"
2826 rasc_decoder_deps="zlib"
2827 rawvideo_decoder_select="bswapdsp"
2828 rscc_decoder_deps="zlib"
2829 rtjpeg_decoder_select="me_cmp"
2830 rv10_decoder_select="h263_decoder"
2831 rv10_encoder_select="h263_encoder"
2832 rv20_decoder_select="h263_decoder"
2833 rv20_encoder_select="h263_encoder"
2834 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2835 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2836 screenpresso_decoder_deps="zlib"
2837 shorten_decoder_select="bswapdsp"
2838 sipr_decoder_select="lsp"
2839 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2840 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2841 sonic_decoder_select="golomb rangecoder"
2842 sonic_encoder_select="golomb rangecoder"
2843 sonic_ls_encoder_select="golomb rangecoder"
2844 sp5x_decoder_select="mjpeg_decoder"
2845 speedhq_decoder_select="mpegvideo"
2846 srgc_decoder_deps="zlib"
2847 svq1_decoder_select="hpeldsp"
2848 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2849 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2850 svq3_decoder_suggest="zlib"
2851 tak_decoder_select="audiodsp"
2852 tdsc_decoder_deps="zlib"
2853 tdsc_decoder_select="mjpeg_decoder"
2854 theora_decoder_select="vp3_decoder"
2855 thp_decoder_select="mjpeg_decoder"
2856 tiff_decoder_select="mjpeg_decoder"
2857 tiff_decoder_suggest="zlib lzma"
2858 tiff_encoder_suggest="zlib"
2859 truehd_decoder_select="mlp_parser"
2860 truehd_encoder_select="lpc audio_frame_queue"
2861 truemotion2_decoder_select="bswapdsp"
2862 truespeech_decoder_select="bswapdsp"
2863 tscc_decoder_deps="zlib"
2864 twinvq_decoder_select="mdct lsp sinewin"
2865 txd_decoder_select="texturedsp"
2866 utvideo_decoder_select="bswapdsp llviddsp"
2867 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2868 vble_decoder_select="llviddsp"
2869 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2870 vc1image_decoder_select="vc1_decoder"
2871 vorbis_decoder_select="mdct"
2872 vorbis_encoder_select="audio_frame_queue mdct"
2873 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2874 vp4_decoder_select="vp3_decoder"
2875 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2876 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2877 vp6a_decoder_select="vp6_decoder"
2878 vp6f_decoder_select="vp6_decoder"
2879 vp7_decoder_select="h264pred videodsp vp8dsp"
2880 vp8_decoder_select="h264pred videodsp vp8dsp"
2881 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2882 wcmv_decoder_deps="zlib"
2883 webp_decoder_select="vp8_decoder exif"
2884 wmalossless_decoder_select="llauddsp"
2885 wmapro_decoder_select="mdct sinewin wma_freqs"
2886 wmav1_decoder_select="mdct sinewin wma_freqs"
2887 wmav1_encoder_select="mdct sinewin wma_freqs"
2888 wmav2_decoder_select="mdct sinewin wma_freqs"
2889 wmav2_encoder_select="mdct sinewin wma_freqs"
2890 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2891 wmv1_decoder_select="h263_decoder"
2892 wmv1_encoder_select="h263_encoder"
2893 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2894 wmv2_encoder_select="h263_encoder wmv2dsp"
2895 wmv3_decoder_select="vc1_decoder"
2896 wmv3image_decoder_select="wmv3_decoder"
2897 xma1_decoder_select="wmapro_decoder"
2898 xma2_decoder_select="wmapro_decoder"
2899 ylc_decoder_select="bswapdsp"
2900 zerocodec_decoder_deps="zlib"
2901 zlib_decoder_deps="zlib"
2902 zlib_encoder_deps="zlib"
2903 zmbv_decoder_deps="zlib"
2904 zmbv_encoder_deps="zlib"
2905
2906 # hardware accelerators
2907 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2908 cuda_deps="ffnvcodec"
2909 cuvid_deps="ffnvcodec"
2910 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2911 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2912 ffnvcodec_deps_any="libdl LoadLibrary"
2913 nvdec_deps="ffnvcodec"
2914 vaapi_x11_deps="xlib"
2915 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2916 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2917 xvmc_deps="X11_extensions_XvMClib_h"
2918
2919 h263_vaapi_hwaccel_deps="vaapi"
2920 h263_vaapi_hwaccel_select="h263_decoder"
2921 h263_videotoolbox_hwaccel_deps="videotoolbox"
2922 h263_videotoolbox_hwaccel_select="h263_decoder"
2923 h264_d3d11va_hwaccel_deps="d3d11va"
2924 h264_d3d11va_hwaccel_select="h264_decoder"
2925 h264_d3d11va2_hwaccel_deps="d3d11va"
2926 h264_d3d11va2_hwaccel_select="h264_decoder"
2927 h264_dxva2_hwaccel_deps="dxva2"
2928 h264_dxva2_hwaccel_select="h264_decoder"
2929 h264_nvdec_hwaccel_deps="nvdec"
2930 h264_nvdec_hwaccel_select="h264_decoder"
2931 h264_vaapi_hwaccel_deps="vaapi"
2932 h264_vaapi_hwaccel_select="h264_decoder"
2933 h264_vdpau_hwaccel_deps="vdpau"
2934 h264_vdpau_hwaccel_select="h264_decoder"
2935 h264_videotoolbox_hwaccel_deps="videotoolbox"
2936 h264_videotoolbox_hwaccel_select="h264_decoder"
2937 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2938 hevc_d3d11va_hwaccel_select="hevc_decoder"
2939 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2940 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2941 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2942 hevc_dxva2_hwaccel_select="hevc_decoder"
2943 hevc_nvdec_hwaccel_deps="nvdec"
2944 hevc_nvdec_hwaccel_select="hevc_decoder"
2945 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2946 hevc_vaapi_hwaccel_select="hevc_decoder"
2947 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2948 hevc_vdpau_hwaccel_select="hevc_decoder"
2949 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2950 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2951 mjpeg_nvdec_hwaccel_deps="nvdec"
2952 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2953 mjpeg_vaapi_hwaccel_deps="vaapi"
2954 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2955 mpeg_xvmc_hwaccel_deps="xvmc"
2956 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2957 mpeg1_nvdec_hwaccel_deps="nvdec"
2958 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2959 mpeg1_vdpau_hwaccel_deps="vdpau"
2960 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2961 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2962 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2963 mpeg1_xvmc_hwaccel_deps="xvmc"
2964 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2965 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2966 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2968 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2969 mpeg2_dxva2_hwaccel_deps="dxva2"
2970 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_nvdec_hwaccel_deps="nvdec"
2972 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_vaapi_hwaccel_deps="vaapi"
2974 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_vdpau_hwaccel_deps="vdpau"
2976 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2978 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2979 mpeg2_xvmc_hwaccel_deps="xvmc"
2980 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2981 mpeg4_nvdec_hwaccel_deps="nvdec"
2982 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2983 mpeg4_vaapi_hwaccel_deps="vaapi"
2984 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2985 mpeg4_vdpau_hwaccel_deps="vdpau"
2986 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2987 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2988 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2989 vc1_d3d11va_hwaccel_deps="d3d11va"
2990 vc1_d3d11va_hwaccel_select="vc1_decoder"
2991 vc1_d3d11va2_hwaccel_deps="d3d11va"
2992 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2993 vc1_dxva2_hwaccel_deps="dxva2"
2994 vc1_dxva2_hwaccel_select="vc1_decoder"
2995 vc1_nvdec_hwaccel_deps="nvdec"
2996 vc1_nvdec_hwaccel_select="vc1_decoder"
2997 vc1_vaapi_hwaccel_deps="vaapi"
2998 vc1_vaapi_hwaccel_select="vc1_decoder"
2999 vc1_vdpau_hwaccel_deps="vdpau"
3000 vc1_vdpau_hwaccel_select="vc1_decoder"
3001 vp8_nvdec_hwaccel_deps="nvdec"
3002 vp8_nvdec_hwaccel_select="vp8_decoder"
3003 vp8_vaapi_hwaccel_deps="vaapi"
3004 vp8_vaapi_hwaccel_select="vp8_decoder"
3005 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3006 vp9_d3d11va_hwaccel_select="vp9_decoder"
3007 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3008 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3009 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3010 vp9_dxva2_hwaccel_select="vp9_decoder"
3011 vp9_nvdec_hwaccel_deps="nvdec"
3012 vp9_nvdec_hwaccel_select="vp9_decoder"
3013 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3014 vp9_vaapi_hwaccel_select="vp9_decoder"
3015 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3016 vp9_vdpau_hwaccel_select="vp9_decoder"
3017 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3018 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3019 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3020 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3021 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3022 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3023
3024 # hardware-accelerated codecs
3025 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3026 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3027 omx_deps="libdl pthreads"
3028 omx_rpi_select="omx"
3029 qsv_deps="libmfx"
3030 qsvdec_select="qsv"
3031 qsvenc_select="qsv"
3032 qsvvpp_select="qsv"
3033 vaapi_encode_deps="vaapi"
3034 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3035
3036 hwupload_cuda_filter_deps="ffnvcodec"
3037 scale_npp_filter_deps="ffnvcodec libnpp"
3038 scale_cuda_filter_deps="ffnvcodec"
3039 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3040 thumbnail_cuda_filter_deps="ffnvcodec"
3041 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3042 transpose_npp_filter_deps="ffnvcodec libnpp"
3043 overlay_cuda_filter_deps="ffnvcodec"
3044 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3045
3046 amf_deps_any="libdl LoadLibrary"
3047 nvenc_deps="ffnvcodec"
3048 nvenc_deps_any="libdl LoadLibrary"
3049 nvenc_encoder_deps="nvenc"
3050
3051 aac_mf_encoder_deps="mediafoundation"
3052 ac3_mf_encoder_deps="mediafoundation"
3053 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3054 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3055 h264_amf_encoder_deps="amf"
3056 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3057 h264_cuvid_decoder_deps="cuvid"
3058 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3059 h264_mediacodec_decoder_deps="mediacodec"
3060 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3061 h264_mf_encoder_deps="mediafoundation"
3062 h264_mmal_decoder_deps="mmal"
3063 h264_nvenc_encoder_deps="nvenc"
3064 h264_nvenc_encoder_select="atsc_a53"
3065 h264_omx_encoder_deps="omx"
3066 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3067 h264_qsv_encoder_select="atsc_a53 qsvenc"
3068 h264_rkmpp_decoder_deps="rkmpp"
3069 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3070 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3071 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3072 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3073 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3074 hevc_amf_encoder_deps="amf"
3075 hevc_cuvid_decoder_deps="cuvid"
3076 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3077 hevc_mediacodec_decoder_deps="mediacodec"
3078 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3079 hevc_mf_encoder_deps="mediafoundation"
3080 hevc_nvenc_encoder_deps="nvenc"
3081 hevc_nvenc_encoder_select="atsc_a53"
3082 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3083 hevc_qsv_encoder_select="hevcparse qsvenc"
3084 hevc_rkmpp_decoder_deps="rkmpp"
3085 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3086 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3087 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3088 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3089 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3090 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3091 mjpeg_cuvid_decoder_deps="cuvid"
3092 mjpeg_qsv_decoder_select="qsvdec"
3093 mjpeg_qsv_encoder_deps="libmfx"
3094 mjpeg_qsv_encoder_select="qsvenc"
3095 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3096 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3097 mp3_mf_encoder_deps="mediafoundation"
3098 mpeg1_cuvid_decoder_deps="cuvid"
3099 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3100 mpeg2_crystalhd_decoder_select="crystalhd"
3101 mpeg2_cuvid_decoder_deps="cuvid"
3102 mpeg2_mmal_decoder_deps="mmal"
3103 mpeg2_mediacodec_decoder_deps="mediacodec"
3104 mpeg2_qsv_decoder_select="qsvdec"
3105 mpeg2_qsv_encoder_select="qsvenc"
3106 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3107 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3108 mpeg4_crystalhd_decoder_select="crystalhd"
3109 mpeg4_cuvid_decoder_deps="cuvid"
3110 mpeg4_mediacodec_decoder_deps="mediacodec"
3111 mpeg4_mmal_decoder_deps="mmal"
3112 mpeg4_omx_encoder_deps="omx"
3113 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3114 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3115 msmpeg4_crystalhd_decoder_select="crystalhd"
3116 nvenc_h264_encoder_select="h264_nvenc_encoder"
3117 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3118 vc1_crystalhd_decoder_select="crystalhd"
3119 vc1_cuvid_decoder_deps="cuvid"
3120 vc1_mmal_decoder_deps="mmal"
3121 vc1_qsv_decoder_select="qsvdec"
3122 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3123 vp8_cuvid_decoder_deps="cuvid"
3124 vp8_mediacodec_decoder_deps="mediacodec"
3125 vp8_qsv_decoder_select="qsvdec"
3126 vp8_rkmpp_decoder_deps="rkmpp"
3127 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3128 vp8_vaapi_encoder_select="vaapi_encode"
3129 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3130 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3131 vp9_cuvid_decoder_deps="cuvid"
3132 vp9_mediacodec_decoder_deps="mediacodec"
3133 vp9_qsv_decoder_select="qsvdec"
3134 vp9_rkmpp_decoder_deps="rkmpp"
3135 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3136 vp9_vaapi_encoder_select="vaapi_encode"
3137 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3138 vp9_qsv_encoder_select="qsvenc"
3139 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3140 wmv3_crystalhd_decoder_select="crystalhd"
3141 av1_qsv_decoder_select="qsvdec"
3142
3143 # parsers
3144 aac_parser_select="adts_header"
3145 av1_parser_select="cbs_av1"
3146 h264_parser_select="golomb h264dsp h264parse"
3147 hevc_parser_select="hevcparse"
3148 mpegaudio_parser_select="mpegaudioheader"
3149 mpegvideo_parser_select="mpegvideo"
3150 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3151 vc1_parser_select="vc1dsp"
3152
3153 # bitstream_filters
3154 aac_adtstoasc_bsf_select="adts_header"
3155 av1_frame_merge_bsf_select="cbs_av1"
3156 av1_frame_split_bsf_select="cbs_av1"
3157 av1_metadata_bsf_select="cbs_av1"
3158 eac3_core_bsf_select="ac3_parser"
3159 filter_units_bsf_select="cbs"
3160 h264_metadata_bsf_deps="const_nan"
3161 h264_metadata_bsf_select="cbs_h264"
3162 h264_redundant_pps_bsf_select="cbs_h264"
3163 hevc_metadata_bsf_select="cbs_h265"
3164 mjpeg2jpeg_bsf_select="jpegtables"
3165 mpeg2_metadata_bsf_select="cbs_mpeg2"
3166 trace_headers_bsf_select="cbs"
3167 vp9_metadata_bsf_select="cbs_vp9"
3168
3169 # external libraries
3170 aac_at_decoder_deps="audiotoolbox"
3171 aac_at_decoder_select="aac_adtstoasc_bsf"
3172 ac3_at_decoder_deps="audiotoolbox"
3173 ac3_at_decoder_select="ac3_parser"
3174 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3175 alac_at_decoder_deps="audiotoolbox"
3176 amr_nb_at_decoder_deps="audiotoolbox"
3177 avisynth_deps_any="libdl LoadLibrary"
3178 avisynth_demuxer_deps="avisynth"
3179 avisynth_demuxer_select="riffdec"
3180 eac3_at_decoder_deps="audiotoolbox"
3181 eac3_at_decoder_select="ac3_parser"
3182 gsm_ms_at_decoder_deps="audiotoolbox"
3183 ilbc_at_decoder_deps="audiotoolbox"
3184 mp1_at_decoder_deps="audiotoolbox"
3185 mp2_at_decoder_deps="audiotoolbox"
3186 mp3_at_decoder_deps="audiotoolbox"
3187 mp1_at_decoder_select="mpegaudioheader"
3188 mp2_at_decoder_select="mpegaudioheader"
3189 mp3_at_decoder_select="mpegaudioheader"
3190 pcm_alaw_at_decoder_deps="audiotoolbox"
3191 pcm_mulaw_at_decoder_deps="audiotoolbox"
3192 qdmc_decoder_select="fft"
3193 qdmc_at_decoder_deps="audiotoolbox"
3194 qdm2_at_decoder_deps="audiotoolbox"
3195 aac_at_encoder_deps="audiotoolbox"
3196 aac_at_encoder_select="audio_frame_queue"
3197 alac_at_encoder_deps="audiotoolbox"
3198 alac_at_encoder_select="audio_frame_queue"
3199 ilbc_at_encoder_deps="audiotoolbox"
3200 ilbc_at_encoder_select="audio_frame_queue"
3201 pcm_alaw_at_encoder_deps="audiotoolbox"
3202 pcm_alaw_at_encoder_select="audio_frame_queue"
3203 pcm_mulaw_at_encoder_deps="audiotoolbox"
3204 pcm_mulaw_at_encoder_select="audio_frame_queue"
3205 chromaprint_muxer_deps="chromaprint"
3206 h264_videotoolbox_encoder_deps="pthreads"
3207 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3208 hevc_videotoolbox_encoder_deps="pthreads"
3209 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3210 libaom_av1_decoder_deps="libaom"
3211 libaom_av1_encoder_deps="libaom"
3212 libaom_av1_encoder_select="extract_extradata_bsf"
3213 libaribb24_decoder_deps="libaribb24"
3214 libcelt_decoder_deps="libcelt"
3215 libcodec2_decoder_deps="libcodec2"
3216 libcodec2_encoder_deps="libcodec2"
3217 libdav1d_decoder_deps="libdav1d"
3218 libdav1d_decoder_select="atsc_a53"
3219 libdavs2_decoder_deps="libdavs2"
3220 libfdk_aac_decoder_deps="libfdk_aac"
3221 libfdk_aac_encoder_deps="libfdk_aac"
3222 libfdk_aac_encoder_select="audio_frame_queue"
3223 libgme_demuxer_deps="libgme"
3224 libgsm_decoder_deps="libgsm"
3225 libgsm_encoder_deps="libgsm"
3226 libgsm_ms_decoder_deps="libgsm"
3227 libgsm_ms_encoder_deps="libgsm"
3228 libilbc_decoder_deps="libilbc"
3229 libilbc_encoder_deps="libilbc"
3230 libkvazaar_encoder_deps="libkvazaar"
3231 libmodplug_demuxer_deps="libmodplug"
3232 libmp3lame_encoder_deps="libmp3lame"
3233 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3234 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3235 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3236 libopencore_amrnb_encoder_select="audio_frame_queue"
3237 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3238 libopenh264_decoder_deps="libopenh264"
3239 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3240 libopenh264_encoder_deps="libopenh264"
3241 libopenjpeg_decoder_deps="libopenjpeg"
3242 libopenjpeg_encoder_deps="libopenjpeg"
3243 libopenmpt_demuxer_deps="libopenmpt"
3244 libopus_decoder_deps="libopus"
3245 libopus_encoder_deps="libopus"
3246 libopus_encoder_select="audio_frame_queue"
3247 librav1e_encoder_deps="librav1e"
3248 librav1e_encoder_select="extract_extradata_bsf"
3249 librsvg_decoder_deps="librsvg"
3250 libshine_encoder_deps="libshine"
3251 libshine_encoder_select="audio_frame_queue"
3252 libspeex_decoder_deps="libspeex"
3253 libspeex_encoder_deps="libspeex"
3254 libspeex_encoder_select="audio_frame_queue"
3255 libsvtav1_encoder_deps="libsvtav1"
3256 libtheora_encoder_deps="libtheora"
3257 libtwolame_encoder_deps="libtwolame"
3258 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3259 libvorbis_decoder_deps="libvorbis"
3260 libvorbis_encoder_deps="libvorbis libvorbisenc"
3261 libvorbis_encoder_select="audio_frame_queue"
3262 libvpx_vp8_decoder_deps="libvpx"
3263 libvpx_vp8_encoder_deps="libvpx"
3264 libvpx_vp9_decoder_deps="libvpx"
3265 libvpx_vp9_encoder_deps="libvpx"
3266 libwebp_encoder_deps="libwebp"
3267 libwebp_anim_encoder_deps="libwebp"
3268 libx262_encoder_deps="libx262"
3269 libx264_encoder_deps="libx264"
3270 libx264_encoder_select="atsc_a53"
3271 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3272 libx264rgb_encoder_select="libx264_encoder"
3273 libx265_encoder_deps="libx265"
3274 libxavs_encoder_deps="libxavs"
3275 libxavs2_encoder_deps="libxavs2"
3276 libxvid_encoder_deps="libxvid"
3277 libzvbi_teletext_decoder_deps="libzvbi"
3278 vapoursynth_demuxer_deps="vapoursynth"
3279 videotoolbox_suggest="coreservices"
3280 videotoolbox_deps="corefoundation coremedia corevideo"
3281 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3282
3283 # demuxers / muxers
3284 ac3_demuxer_select="ac3_parser"
3285 act_demuxer_select="riffdec"
3286 aiff_muxer_select="iso_media"
3287 asf_demuxer_select="riffdec"
3288 asf_o_demuxer_select="riffdec"
3289 asf_muxer_select="riffenc"
3290 asf_stream_muxer_select="asf_muxer"
3291 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3292 avi_demuxer_select="iso_media riffdec exif"
3293 avi_muxer_select="riffenc"
3294 caf_demuxer_select="iso_media riffdec"
3295 caf_muxer_select="iso_media"
3296 dash_muxer_select="mp4_muxer"
3297 dash_demuxer_deps="libxml2"
3298 dirac_demuxer_select="dirac_parser"
3299 dts_demuxer_select="dca_parser"
3300 dtshd_demuxer_select="dca_parser"
3301 dv_demuxer_select="dvprofile"
3302 dv_muxer_select="dvprofile"
3303 dxa_demuxer_select="riffdec"
3304 eac3_demuxer_select="ac3_parser"
3305 f4v_muxer_select="mov_muxer"
3306 fifo_muxer_deps="threads"
3307 flac_demuxer_select="flac_parser"
3308 flv_muxer_select="aac_adtstoasc_bsf"
3309 gxf_muxer_select="pcm_rechunk_bsf"
3310 hds_muxer_select="flv_muxer"
3311 hls_muxer_select="mpegts_muxer"
3312 hls_muxer_suggest="gcrypt openssl"
3313 image2_alias_pix_demuxer_select="image2_demuxer"
3314 image2_brender_pix_demuxer_select="image2_demuxer"
3315 ipod_muxer_select="mov_muxer"
3316 ismv_muxer_select="mov_muxer"
3317 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3318 latm_muxer_select="aac_adtstoasc_bsf"
3319 matroska_audio_muxer_select="matroska_muxer"
3320 matroska_demuxer_select="iso_media riffdec"
3321 matroska_demuxer_suggest="bzlib lzo zlib"
3322 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3323 mlp_demuxer_select="mlp_parser"
3324 mmf_muxer_select="riffenc"
3325 mov_demuxer_select="iso_media riffdec"
3326 mov_demuxer_suggest="zlib"
3327 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3328 mp3_demuxer_select="mpegaudio_parser"
3329 mp3_muxer_select="mpegaudioheader"
3330 mp4_muxer_select="mov_muxer"
3331 mpegts_demuxer_select="iso_media"
3332 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3333 mpegtsraw_demuxer_select="mpegts_demuxer"
3334 mxf_muxer_select="golomb pcm_rechunk_bsf"
3335 mxf_d10_muxer_select="mxf_muxer"
3336 mxf_opatom_muxer_select="mxf_muxer"
3337 nut_muxer_select="riffenc"
3338 nuv_demuxer_select="riffdec"
3339 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3340 oga_muxer_select="ogg_muxer"
3341 ogg_demuxer_select="dirac_parse"
3342 ogv_muxer_select="ogg_muxer"
3343 opus_muxer_select="ogg_muxer"
3344 psp_muxer_select="mov_muxer"
3345 rtp_demuxer_select="sdp_demuxer"
3346 rtp_muxer_select="golomb jpegtables"
3347 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3348 rtsp_demuxer_select="http_protocol rtpdec"
3349 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3350 sap_demuxer_select="sdp_demuxer"
3351 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3352 sdp_demuxer_select="rtpdec"
3353 smoothstreaming_muxer_select="ismv_muxer"
3354 spdif_demuxer_select="adts_header"
3355 spdif_muxer_select="adts_header"
3356 spx_muxer_select="ogg_muxer"
3357 swf_demuxer_suggest="zlib"
3358 tak_demuxer_select="tak_parser"
3359 truehd_demuxer_select="mlp_parser"
3360 tg2_muxer_select="mov_muxer"
3361 tgp_muxer_select="mov_muxer"
3362 vobsub_demuxer_select="mpegps_demuxer"
3363 w64_demuxer_select="wav_demuxer"
3364 w64_muxer_select="wav_muxer"
3365 wav_demuxer_select="riffdec"
3366 wav_muxer_select="riffenc"
3367 webm_chunk_muxer_select="webm_muxer"
3368 webm_muxer_select="iso_media riffenc"
3369 webm_dash_manifest_demuxer_select="matroska_demuxer"
3370 wtv_demuxer_select="mpegts_demuxer riffdec"
3371 wtv_muxer_select="mpegts_muxer riffenc"
3372 xmv_demuxer_select="riffdec"
3373 xwma_demuxer_select="riffdec"
3374
3375 # indevs / outdevs
3376 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3377 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3378 alsa_indev_deps="alsa"
3379 alsa_outdev_deps="alsa"
3380 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3381 avfoundation_indev_suggest="coregraphics applicationservices"
3382 avfoundation_indev_extralibs="-framework Foundation"
3383 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3384 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3385 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3386 caca_outdev_deps="libcaca"
3387 decklink_deps_any="libdl LoadLibrary"
3388 decklink_indev_deps="decklink threads"
3389 decklink_indev_extralibs="-lstdc++"
3390 decklink_outdev_deps="decklink threads"
3391 decklink_outdev_suggest="libklvanc"
3392 decklink_outdev_extralibs="-lstdc++"
3393 dshow_indev_deps="IBaseFilter"
3394 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3395 fbdev_indev_deps="linux_fb_h"
3396 fbdev_outdev_deps="linux_fb_h"
3397 gdigrab_indev_deps="CreateDIBSection"
3398 gdigrab_indev_extralibs="-lgdi32"
3399 gdigrab_indev_select="bmp_decoder"
3400 iec61883_indev_deps="libiec61883"
3401 jack_indev_deps="libjack"
3402 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3403 kmsgrab_indev_deps="libdrm"
3404 lavfi_indev_deps="avfilter"
3405 libcdio_indev_deps="libcdio"
3406 libdc1394_indev_deps="libdc1394"
3407 openal_indev_deps="openal"
3408 opengl_outdev_deps="opengl"
3409 opengl_outdev_suggest="sdl2"
3410 oss_indev_deps_any="sys_soundcard_h"
3411 oss_outdev_deps_any="sys_soundcard_h"
3412 pulse_indev_deps="libpulse"
3413 pulse_outdev_deps="libpulse"
3414 sdl2_outdev_deps="sdl2"
3415 sndio_indev_deps="sndio"
3416 sndio_outdev_deps="sndio"
3417 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3418 v4l2_indev_suggest="libv4l2"
3419 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3420 v4l2_outdev_suggest="libv4l2"
3421 vfwcap_indev_deps="vfw32 vfwcap_defines"
3422 xcbgrab_indev_deps="libxcb"
3423 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3424 xv_outdev_deps="xlib"
3425
3426 # protocols
3427 async_protocol_deps="threads"
3428 bluray_protocol_deps="libbluray"
3429 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3430 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3431 ffrtmpcrypt_protocol_select="tcp_protocol"
3432 ffrtmphttp_protocol_conflict="librtmp_protocol"
3433 ffrtmphttp_protocol_select="http_protocol"
3434 ftp_protocol_select="tcp_protocol"
3435 gopher_protocol_select="network"
3436 http_protocol_select="tcp_protocol"
3437 http_protocol_suggest="zlib"
3438 httpproxy_protocol_select="tcp_protocol"
3439 httpproxy_protocol_suggest="zlib"
3440 https_protocol_select="tls_protocol"
3441 https_protocol_suggest="zlib"
3442 icecast_protocol_select="http_protocol"
3443 mmsh_protocol_select="http_protocol"
3444 mmst_protocol_select="network"
3445 rtmp_protocol_conflict="librtmp_protocol"
3446 rtmp_protocol_select="tcp_protocol"
3447 rtmp_protocol_suggest="zlib"
3448 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3449 rtmpe_protocol_suggest="zlib"
3450 rtmps_protocol_conflict="librtmp_protocol"
3451 rtmps_protocol_select="tls_protocol"
3452 rtmps_protocol_suggest="zlib"
3453 rtmpt_protocol_select="ffrtmphttp_protocol"
3454 rtmpt_protocol_suggest="zlib"
3455 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3456 rtmpte_protocol_suggest="zlib"
3457 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3458 rtmpts_protocol_suggest="zlib"
3459 rtp_protocol_select="udp_protocol"
3460 schannel_conflict="openssl gnutls libtls mbedtls"
3461 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3462 sctp_protocol_select="network"
3463 securetransport_conflict="openssl gnutls libtls mbedtls"
3464 srtp_protocol_select="rtp_protocol srtp"
3465 tcp_protocol_select="network"
3466 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3467 tls_protocol_select="tcp_protocol"
3468 udp_protocol_select="network"
3469 udplite_protocol_select="network"
3470 unix_protocol_deps="sys_un_h"
3471 unix_protocol_select="network"
3472
3473 # external library protocols
3474 libamqp_protocol_deps="librabbitmq"
3475 libamqp_protocol_select="network"
3476 librtmp_protocol_deps="librtmp"
3477 librtmpe_protocol_deps="librtmp"
3478 librtmps_protocol_deps="librtmp"
3479 librtmpt_protocol_deps="librtmp"
3480 librtmpte_protocol_deps="librtmp"
3481 libsmbclient_protocol_deps="libsmbclient gplv3"
3482 libsrt_protocol_deps="libsrt"
3483 libsrt_protocol_select="network"
3484 libssh_protocol_deps="libssh"
3485 libtls_conflict="openssl gnutls mbedtls"
3486 libzmq_protocol_deps="libzmq"
3487 libzmq_protocol_select="network"
3488
3489 # filters
3490 afftdn_filter_deps="avcodec"
3491 afftdn_filter_select="fft"
3492 afftfilt_filter_deps="avcodec"
3493 afftfilt_filter_select="fft"
3494 afir_filter_deps="avcodec"
3495 afir_filter_select="rdft"
3496 amovie_filter_deps="avcodec avformat"
3497 aresample_filter_deps="swresample"
3498 asr_filter_deps="pocketsphinx"
3499 ass_filter_deps="libass"
3500 atempo_filter_deps="avcodec"
3501 atempo_filter_select="rdft"
3502 avgblur_opencl_filter_deps="opencl"
3503 avgblur_vulkan_filter_deps="vulkan libglslang"
3504 azmq_filter_deps="libzmq"
3505 blackframe_filter_deps="gpl"
3506 bm3d_filter_deps="avcodec"
3507 bm3d_filter_select="dct"
3508 boxblur_filter_deps="gpl"
3509 boxblur_opencl_filter_deps="opencl gpl"
3510 bs2b_filter_deps="libbs2b"
3511 chromaber_vulkan_filter_deps="vulkan libglslang"
3512 colorkey_opencl_filter_deps="opencl"
3513 colormatrix_filter_deps="gpl"
3514 convolution_opencl_filter_deps="opencl"
3515 convolve_filter_deps="avcodec"
3516 convolve_filter_select="fft"
3517 coreimage_filter_deps="coreimage appkit"
3518 coreimage_filter_extralibs="-framework OpenGL"
3519 coreimagesrc_filter_deps="coreimage appkit"
3520 coreimagesrc_filter_extralibs="-framework OpenGL"
3521 cover_rect_filter_deps="avcodec avformat gpl"
3522 cropdetect_filter_deps="gpl"
3523 deconvolve_filter_deps="avcodec"
3524 deconvolve_filter_select="fft"
3525 deinterlace_qsv_filter_deps="libmfx"
3526 deinterlace_vaapi_filter_deps="vaapi"
3527 delogo_filter_deps="gpl"
3528 denoise_vaapi_filter_deps="vaapi"
3529 derain_filter_select="dnn"
3530 deshake_filter_select="pixelutils"
3531 deshake_opencl_filter_deps="opencl"
3532 dilation_opencl_filter_deps="opencl"
3533 dnn_processing_filter_select="dnn"
3534 drawtext_filter_deps="libfreetype"
3535 drawtext_filter_suggest="libfontconfig libfribidi"
3536 elbg_filter_deps="avcodec"
3537 eq_filter_deps="gpl"
3538 erosion_opencl_filter_deps="opencl"
3539 fftfilt_filter_deps="avcodec"
3540 fftfilt_filter_select="rdft"
3541 fftdnoiz_filter_deps="avcodec"
3542 fftdnoiz_filter_select="fft"
3543 find_rect_filter_deps="avcodec avformat gpl"
3544 firequalizer_filter_deps="avcodec"
3545 firequalizer_filter_select="rdft"
3546 flite_filter_deps="libflite"
3547 framerate_filter_select="scene_sad"
3548 freezedetect_filter_select="scene_sad"
3549 frei0r_filter_deps="frei0r libdl"
3550 frei0r_src_filter_deps="frei0r libdl"
3551 fspp_filter_deps="gpl"
3552 headphone_filter_select="fft"
3553 histeq_filter_deps="gpl"
3554 hqdn3d_filter_deps="gpl"
3555 interlace_filter_deps="gpl"
3556 kerndeint_filter_deps="gpl"
3557 ladspa_filter_deps="ladspa libdl"
3558 lensfun_filter_deps="liblensfun version3"
3559 lv2_filter_deps="lv2"
3560 mcdeint_filter_deps="avcodec gpl"
3561 movie_filter_deps="avcodec avformat"
3562 mpdecimate_filter_deps="gpl"
3563 mpdecimate_filter_select="pixelutils"
3564 minterpolate_filter_select="scene_sad"
3565 mptestsrc_filter_deps="gpl"
3566 negate_filter_deps="lut_filter"
3567 nlmeans_opencl_filter_deps="opencl"
3568 nnedi_filter_deps="gpl"
3569 ocr_filter_deps="libtesseract"
3570 ocv_filter_deps="libopencv"
3571 openclsrc_filter_deps="opencl"
3572 overlay_opencl_filter_deps="opencl"
3573 overlay_qsv_filter_deps="libmfx"
3574 overlay_qsv_filter_select="qsvvpp"
3575 overlay_vulkan_filter_deps="vulkan libglslang"
3576 owdenoise_filter_deps="gpl"
3577 pad_opencl_filter_deps="opencl"
3578 pan_filter_deps="swresample"
3579 perspective_filter_deps="gpl"
3580 phase_filter_deps="gpl"
3581 pp7_filter_deps="gpl"
3582 pp_filter_deps="gpl postproc"
3583 prewitt_opencl_filter_deps="opencl"
3584 procamp_vaapi_filter_deps="vaapi"
3585 program_opencl_filter_deps="opencl"
3586 pullup_filter_deps="gpl"
3587 removelogo_filter_deps="avcodec avformat swscale"
3588 repeatfields_filter_deps="gpl"
3589 resample_filter_deps="avresample"
3590 roberts_opencl_filter_deps="opencl"
3591 rubberband_filter_deps="librubberband"
3592 sab_filter_deps="gpl swscale"
3593 scale2ref_filter_deps="swscale"
3594 scale_filter_deps="swscale"
3595 scale_qsv_filter_deps="libmfx"
3596 scdet_filter_select="scene_sad"
3597 select_filter_select="scene_sad"
3598 sharpness_vaapi_filter_deps="vaapi"
3599 showcqt_filter_deps="avcodec avformat swscale"
3600 showcqt_filter_suggest="libfontconfig libfreetype"
3601 showcqt_filter_select="fft"
3602 showfreqs_filter_deps="avcodec"
3603 showfreqs_filter_select="fft"
3604 showspatial_filter_select="fft"
3605 showspectrum_filter_deps="avcodec"
3606 showspectrum_filter_select="fft"
3607 showspectrumpic_filter_deps="avcodec"
3608 showspectrumpic_filter_select="fft"
3609 signature_filter_deps="gpl avcodec avformat"
3610 sinc_filter_select="rdft"
3611 smartblur_filter_deps="gpl swscale"
3612 sobel_opencl_filter_deps="opencl"
3613 sofalizer_filter_deps="libmysofa avcodec"
3614 sofalizer_filter_select="fft"
3615 spectrumsynth_filter_deps="avcodec"
3616 spectrumsynth_filter_select="fft"
3617 spp_filter_deps="gpl avcodec"
3618 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3619 sr_filter_deps="avformat swscale"
3620 sr_filter_select="dnn"
3621 stereo3d_filter_deps="gpl"
3622 subtitles_filter_deps="avformat avcodec libass"
3623 super2xsai_filter_deps="gpl"
3624 pixfmts_super2xsai_test_deps="super2xsai_filter"
3625 superequalizer_filter_select="rdft"
3626 surround_filter_select="rdft"
3627 tinterlace_filter_deps="gpl"
3628 tinterlace_merge_test_deps="tinterlace_filter"
3629 tinterlace_pad_test_deps="tinterlace_filter"
3630 tonemap_filter_deps="const_nan"
3631 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3632 tonemap_opencl_filter_deps="opencl const_nan"
3633 transpose_opencl_filter_deps="opencl"
3634 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3635 unsharp_opencl_filter_deps="opencl"
3636 uspp_filter_deps="gpl avcodec"
3637 vaguedenoiser_filter_deps="gpl"
3638 vidstabdetect_filter_deps="libvidstab"
3639 vidstabtransform_filter_deps="libvidstab"
3640 libvmaf_filter_deps="libvmaf pthreads"
3641 zmq_filter_deps="libzmq"
3642 zoompan_filter_deps="swscale"
3643 zscale_filter_deps="libzimg const_nan"
3644 scale_vaapi_filter_deps="vaapi"
3645 scale_vulkan_filter_deps="vulkan libglslang"
3646 vpp_qsv_filter_deps="libmfx"
3647 vpp_qsv_filter_select="qsvvpp"
3648 xfade_opencl_filter_deps="opencl"
3649 yadif_cuda_filter_deps="ffnvcodec"
3650 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3651
3652 # examples
3653 avio_list_dir_deps="avformat avutil"
3654 avio_reading_deps="avformat avcodec avutil"
3655 decode_audio_example_deps="avcodec avutil"
3656 decode_video_example_deps="avcodec avutil"
3657 demuxing_decoding_example_deps="avcodec avformat avutil"
3658 encode_audio_example_deps="avcodec avutil"
3659 encode_video_example_deps="avcodec avutil"
3660 extract_mvs_example_deps="avcodec avformat avutil"
3661 filter_audio_example_deps="avfilter avutil"
3662 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3663 filtering_video_example_deps="avfilter avcodec avformat avutil"
3664 http_multiclient_example_deps="avformat avutil fork"
3665 hw_decode_example_deps="avcodec avformat avutil"
3666 metadata_example_deps="avformat avutil"
3667 muxing_example_deps="avcodec avformat avutil swscale"
3668 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3669 remuxing_example_deps="avcodec avformat avutil"
3670 resampling_audio_example_deps="avutil swresample"
3671 scaling_video_example_deps="avutil swscale"
3672 transcode_aac_example_deps="avcodec avformat swresample"
3673 transcoding_example_deps="avfilter avcodec avformat avutil"
3674 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3675 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3676
3677 # EXTRALIBS_LIST
3678 cpu_init_extralibs="pthreads_extralibs"
3679 cws2fws_extralibs="zlib_extralibs"
3680
3681 # libraries, in any order
3682 avcodec_deps="avutil"
3683 avcodec_suggest="libm"
3684 avcodec_select="null_bsf"
3685 avdevice_deps="avformat avcodec avutil"
3686 avdevice_suggest="libm"
3687 avfilter_deps="avutil"
3688 avfilter_suggest="libm"
3689 avformat_deps="avcodec avutil"
3690 avformat_suggest="libm network zlib"
3691 avresample_deps="avutil"
3692 avresample_suggest="libm"
3693 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3694 postproc_deps="avutil gpl"
3695 postproc_suggest="libm"
3696 swresample_deps="avutil"
3697 swresample_suggest="libm libsoxr"
3698 swscale_deps="avutil"
3699 swscale_suggest="libm"
3700
3701 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3702 avfilter_extralibs="pthreads_extralibs"
3703 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3704
3705 # programs
3706 ffmpeg_deps="avcodec avfilter avformat"
3707 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3708                hflip_filter null_filter
3709                transpose_filter trim_filter vflip_filter"
3710 ffmpeg_suggest="ole32 psapi shell32"
3711 ffplay_deps="avcodec avformat swscale swresample sdl2"
3712 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3713 ffplay_suggest="shell32"
3714 ffprobe_deps="avcodec avformat"
3715 ffprobe_suggest="shell32"
3716
3717 # documentation
3718 podpages_deps="perl"
3719 manpages_deps="perl pod2man"
3720 htmlpages_deps="perl"
3721 htmlpages_deps_any="makeinfo_html texi2html"
3722 txtpages_deps="perl makeinfo"
3723 doc_deps_any="manpages htmlpages podpages txtpages"
3724
3725 # default parameters
3726
3727 logfile="ffbuild/config.log"
3728
3729 # installation paths
3730 prefix_default="/usr/local"
3731 bindir_default='${prefix}/bin'
3732 datadir_default='${prefix}/share/ffmpeg'
3733 docdir_default='${prefix}/share/doc/ffmpeg'
3734 incdir_default='${prefix}/include'
3735 libdir_default='${prefix}/lib'
3736 mandir_default='${prefix}/share/man'
3737
3738 # toolchain
3739 ar_default="ar"
3740 cc_default="gcc"
3741 cxx_default="g++"
3742 host_cc_default="gcc"
3743 doxygen_default="doxygen"
3744 install="install"
3745 ln_s_default="ln -s -f"
3746 nm_default="nm -g"
3747 pkg_config_default=pkg-config
3748 ranlib_default="ranlib"
3749 strip_default="strip"
3750 version_script='--version-script'
3751 objformat="elf32"
3752 x86asmexe_default="nasm"
3753 windres_default="windres"
3754 striptype="direct"
3755
3756 # OS
3757 target_os_default=$(tolower $(uname -s))
3758 host_os=$target_os_default
3759
3760 # machine
3761 if test "$target_os_default" = aix; then
3762     arch_default=$(uname -p)
3763     strip_default="strip -X32_64"
3764     nm_default="nm -g -X32_64"
3765 else
3766     arch_default=$(uname -m)
3767 fi
3768 cpu="generic"
3769 intrinsics="none"
3770
3771 # configurable options
3772 enable $PROGRAM_LIST
3773 enable $DOCUMENT_LIST
3774 enable $EXAMPLE_LIST
3775 enable $(filter_out avresample $LIBRARY_LIST)
3776 enable stripping
3777
3778 enable asm
3779 enable debug
3780 enable doc
3781 enable faan faandct faanidct
3782 enable large_tests
3783 enable optimizations
3784 enable runtime_cpudetect
3785 enable safe_bitstream_reader
3786 enable static
3787 enable swscale_alpha
3788 enable valgrind_backtrace
3789
3790 sws_max_filter_size_default=256
3791 set_default sws_max_filter_size
3792
3793 # internal components are enabled by default
3794 enable $EXTRALIBS_LIST
3795
3796 # Avoid external, non-system, libraries getting enabled by dependency resolution
3797 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3798
3799 # build settings
3800 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3801 LIBPREF="lib"
3802 LIBSUF=".a"
3803 FULLNAME='$(NAME)$(BUILDSUF)'
3804 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3805 SLIBPREF="lib"
3806 SLIBSUF=".so"
3807 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3808 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3809 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3810 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3811 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3812 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3813 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3814
3815 asflags_filter=echo
3816 cflags_filter=echo
3817 ldflags_filter=echo
3818
3819 AS_C='-c'
3820 AS_O='-o $@'
3821 CC_C='-c'
3822 CC_E='-E -o $@'
3823 CC_O='-o $@'
3824 CXX_C='-c'
3825 CXX_O='-o $@'
3826 OBJCC_C='-c'
3827 OBJCC_E='-E -o $@'
3828 OBJCC_O='-o $@'
3829 X86ASM_O='-o $@'
3830 LD_O='-o $@'
3831 LD_LIB='-l%'
3832 LD_PATH='-L'
3833 HOSTCC_C='-c'
3834 HOSTCC_E='-E -o $@'
3835 HOSTCC_O='-o $@'
3836 HOSTLD_O='-o $@'
3837 NVCC_C='-c'
3838 NVCC_O='-o $@'
3839
3840 host_extralibs='-lm'
3841 host_cflags_filter=echo
3842 host_ldflags_filter=echo
3843
3844 target_path='$(CURDIR)'
3845
3846 # since the object filename is not given with the -MM flag, the compiler
3847 # is only able to print the basename, and we must add the path ourselves
3848 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3849 DEPFLAGS='-MM'
3850
3851 mkdir -p ffbuild
3852
3853 # find source path
3854 if test -f configure; then
3855     source_path=.
3856 elif test -f src/configure; then
3857     source_path=src
3858 else
3859     source_path=$(cd $(dirname "$0"); pwd)
3860     case "$source_path" in
3861         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3862     esac
3863     test -e "$source_path/config.h" &&
3864         die "Out of tree builds are impossible with config.h in source dir."
3865 fi
3866
3867 for v in "$@"; do
3868     r=${v#*=}
3869     l=${v%"$r"}
3870     r=$(sh_quote "$r")
3871     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3872 done
3873
3874 find_things_extern(){
3875     thing=$1
3876     pattern=$2
3877     file=$source_path/$3
3878     out=${4:-$thing}
3879     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3880 }
3881
3882 find_filters_extern(){
3883     file=$source_path/$1
3884     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3885 }
3886
3887 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3888 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3889 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3890 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3891 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3892 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3893 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3894 CODEC_LIST="
3895     $ENCODER_LIST
3896     $DECODER_LIST
3897 "
3898 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3899 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3900 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3901 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3902
3903 AVCODEC_COMPONENTS_LIST="
3904     $BSF_LIST
3905     $DECODER_LIST
3906     $ENCODER_LIST
3907     $HWACCEL_LIST
3908     $PARSER_LIST
3909 "
3910
3911 AVDEVICE_COMPONENTS_LIST="
3912     $INDEV_LIST
3913     $OUTDEV_LIST
3914 "
3915
3916 AVFILTER_COMPONENTS_LIST="
3917     $FILTER_LIST
3918 "
3919
3920 AVFORMAT_COMPONENTS_LIST="
3921     $DEMUXER_LIST
3922     $MUXER_LIST
3923     $PROTOCOL_LIST
3924 "
3925
3926 ALL_COMPONENTS="
3927     $AVCODEC_COMPONENTS_LIST
3928     $AVDEVICE_COMPONENTS_LIST
3929     $AVFILTER_COMPONENTS_LIST
3930     $AVFORMAT_COMPONENTS_LIST
3931 "
3932
3933 for n in $COMPONENT_LIST; do
3934     v=$(toupper ${n%s})_LIST
3935     eval enable \$$v
3936     eval ${n}_if_any="\$$v"
3937 done
3938
3939 enable $ARCH_EXT_LIST
3940
3941 die_unknown(){
3942     echo "Unknown option \"$1\"."
3943     echo "See $0 --help for available options."
3944     exit 1
3945 }
3946
3947 print_in_columns() {
3948     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3949     {
3950         num_cols = width > col_width ? int(width / col_width) : 1;
3951         num_rows = int((NF + num_cols-1) / num_cols);
3952         y = x = 1;
3953         for (y = 1; y <= num_rows; y++) {
3954             i = y;
3955             for (x = 1; x <= num_cols; x++) {
3956                 if (i <= NF) {
3957                   line = sprintf("%s%-" col_width "s", line, $i);
3958                 }
3959                 i = i + num_rows;
3960             }
3961             print line; line = "";
3962         }
3963     }' | sed 's/ *$//'
3964 }
3965
3966 show_list() {
3967     suffix=_$1
3968     shift
3969     echo $* | sed s/$suffix//g | print_in_columns
3970     exit 0
3971 }
3972
3973 rand_list(){
3974     IFS=', '
3975     set -- $*
3976     unset IFS
3977     for thing; do
3978         comp=${thing%:*}
3979         prob=${thing#$comp}
3980         prob=${prob#:}
3981         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3982         echo "prob ${prob:-0.5}"
3983         printf '%s\n' $comp
3984     done
3985 }
3986
3987 do_random(){
3988     action=$1
3989     shift
3990     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3991     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3992 }
3993
3994 for opt do
3995     optval="${opt#*=}"
3996     case "$opt" in
3997         --extra-ldflags=*)
3998             add_ldflags $optval
3999         ;;
4000         --extra-ldexeflags=*)
4001             add_ldexeflags $optval
4002         ;;
4003         --extra-ldsoflags=*)
4004             add_ldsoflags $optval
4005         ;;
4006         --extra-ldlibflags=*)
4007             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4008                  "removed in the future. Use --extra-ldsoflags instead."
4009             add_ldsoflags $optval
4010         ;;
4011         --extra-libs=*)
4012             add_extralibs $optval
4013         ;;
4014         --disable-devices)
4015             disable $INDEV_LIST $OUTDEV_LIST
4016         ;;
4017         --enable-debug=*)
4018             debuglevel="$optval"
4019         ;;
4020         --disable-programs)
4021             disable $PROGRAM_LIST
4022         ;;
4023         --disable-everything)
4024             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4025         ;;
4026         --disable-all)
4027             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4028             disable $LIBRARY_LIST $PROGRAM_LIST doc
4029             enable avutil
4030         ;;
4031         --enable-random|--disable-random)
4032             action=${opt%%-random}
4033             do_random ${action#--} $COMPONENT_LIST
4034         ;;
4035         --enable-random=*|--disable-random=*)
4036             action=${opt%%-random=*}
4037             do_random ${action#--} $optval
4038         ;;
4039         --enable-sdl)
4040             enable sdl2
4041         ;;
4042         --enable-*=*|--disable-*=*)
4043             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4044             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4045             eval list=\$$(toupper $thing)_LIST
4046             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4047             list=$(filter "$name" $list)
4048             [ "$list" = "" ] && warn "Option $opt did not match anything"
4049             test $action = enable && warn_if_gets_disabled $list
4050             $action $list
4051         ;;
4052         --enable-yasm|--disable-yasm)
4053             warn "The ${opt} option is only provided for compatibility and will be\n"\
4054                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4055             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4056         ;;
4057         --yasmexe=*)
4058             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4059                  "removed in the future. Use --x86asmexe instead."
4060             x86asmexe="$optval"
4061         ;;
4062         --enable-?*|--disable-?*)
4063             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4064             if is_in $option $COMPONENT_LIST; then
4065                 test $action = disable && action=unset
4066                 eval $action \$$(toupper ${option%s})_LIST
4067             elif is_in $option $CMDLINE_SELECT; then
4068                 $action $option
4069             else
4070                 die_unknown $opt
4071             fi
4072         ;;
4073         --list-*)
4074             NAME="${opt#--list-}"
4075             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4076             NAME=${NAME%s}
4077             eval show_list $NAME \$$(toupper $NAME)_LIST
4078         ;;
4079         --help|-h) show_help
4080         ;;
4081         --quiet|-q) quiet=yes
4082         ;;
4083         --fatal-warnings) enable fatal_warnings
4084         ;;
4085         --libfuzzer=*)
4086             libfuzzer_path="$optval"
4087         ;;
4088         *)
4089             optname="${opt%%=*}"
4090             optname="${optname#--}"
4091             optname=$(echo "$optname" | sed 's/-/_/g')
4092             if is_in $optname $CMDLINE_SET; then
4093                 eval $optname='$optval'
4094             elif is_in $optname $CMDLINE_APPEND; then
4095                 append $optname "$optval"
4096             else
4097                 die_unknown $opt
4098             fi
4099         ;;
4100     esac
4101 done
4102
4103 for e in $env; do
4104     eval "export $e"
4105 done
4106
4107 if disabled autodetect; then
4108
4109     # Unless iconv is explicitely disabled by the user, we still want to probe
4110     # for the iconv from the libc.
4111     disabled iconv || enable libc_iconv
4112
4113     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4114     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4115 fi
4116 # Mark specifically enabled, but normally autodetected libraries as requested.
4117 for lib in $AUTODETECT_LIBS; do
4118     enabled $lib && request $lib
4119 done
4120 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4121 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4122 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4123
4124 disabled logging && logfile=/dev/null
4125
4126 # command line configuration sanity checks
4127
4128 # we need to build at least one lib type
4129 if ! enabled_any static shared; then
4130     cat <<EOF
4131 At least one library type must be built.
4132 Specify --enable-static to build the static libraries or --enable-shared to
4133 build the shared libraries as well. To only build the shared libraries specify
4134 --disable-static in addition to --enable-shared.
4135 EOF
4136     exit 1
4137 fi
4138
4139 die_license_disabled() {
4140     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4141 }
4142
4143 die_license_disabled_gpl() {
4144     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4145 }
4146
4147 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4148 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4149
4150 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4151 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4152
4153 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4154
4155 if enabled nonfree; then
4156     license="nonfree and unredistributable"
4157 elif enabled gplv3; then
4158     license="GPL version 3 or later"
4159 elif enabled lgplv3; then
4160     license="LGPL version 3 or later"
4161 elif enabled gpl; then
4162     license="GPL version 2 or later"
4163 else
4164     license="LGPL version 2.1 or later"
4165 fi
4166
4167 enabled_all gnutls openssl &&
4168     die "GnuTLS and OpenSSL must not be enabled at the same time."
4169
4170 enabled_all gnutls mbedtls &&
4171     die "GnuTLS and mbedTLS must not be enabled at the same time."
4172
4173 enabled_all openssl mbedtls &&
4174     die "OpenSSL and mbedTLS must not be enabled at the same time."
4175
4176 # Disable all the library-specific components if the library itself
4177 # is disabled, see AVCODEC_LIST and following _LIST variables.
4178
4179 disable_components(){
4180     disabled ${1} && disable $(
4181         eval components="\$$(toupper ${1})_COMPONENTS"
4182         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4183     )
4184 }
4185
4186 map 'disable_components $v' $LIBRARY_LIST
4187
4188 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4189 set >> $logfile
4190
4191 test -n "$valgrind" && toolchain="valgrind-memcheck"
4192
4193 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4194     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4195     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4196 }
4197
4198 case "$toolchain" in
4199     *-asan)
4200         cc_default="${toolchain%-asan}"
4201         add_cflags  -fsanitize=address
4202         add_ldflags -fsanitize=address
4203     ;;
4204     *-msan)
4205         cc_default="${toolchain%-msan}"
4206         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4207         add_ldflags -fsanitize=memory
4208     ;;
4209     *-tsan)
4210         cc_default="${toolchain%-tsan}"
4211         add_cflags  -fsanitize=thread
4212         add_ldflags -fsanitize=thread
4213         case "$toolchain" in
4214             gcc-tsan)
4215                 add_cflags  -fPIC
4216                 add_ldflags -fPIC
4217                 ;;
4218         esac
4219     ;;
4220     *-usan)
4221         cc_default="${toolchain%-usan}"
4222         add_cflags  -fsanitize=undefined
4223         add_ldflags -fsanitize=undefined
4224     ;;
4225     valgrind-*)
4226         target_exec_default="valgrind"
4227         case "$toolchain" in
4228             valgrind-massif)
4229                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
4230                 ;;
4231             valgrind-memcheck)
4232                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4233                 ;;
4234         esac
4235     ;;
4236     msvc)
4237         # Check whether the current MSVC version needs the C99 converter.
4238         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4239         # support enough of C99 to build ffmpeg. Default to the new
4240         # behaviour if the regexp was unable to match anything, since this
4241         # successfully parses the version number of existing supported
4242         # versions that require the converter (MSVC 2010 and 2012).
4243         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4244         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4245             cc_default="cl.exe"
4246             cxx_default="cl.exe"
4247         else
4248             die "Unsupported MSVC version (2013 or newer required)"
4249         fi
4250         ld_default="$source_path/compat/windows/mslink"
4251         nm_default="dumpbin.exe -symbols"
4252         ar_default="lib.exe"
4253         case "$arch" in
4254         aarch64|arm64)
4255             as_default="armasm64.exe"
4256             ;;
4257         arm*)
4258             as_default="armasm.exe"
4259             ;;
4260         esac
4261         target_os_default="win32"
4262         # Use a relative path for TMPDIR. This makes sure all the
4263         # ffconf temp files are written with a relative path, avoiding
4264         # issues with msys/win32 path conversion for MSVC parameters
4265         # such as -Fo<file> or -out:<file>.
4266         TMPDIR=.
4267     ;;
4268     icl)
4269         cc_default="icl"
4270         ld_default="xilink"
4271         nm_default="dumpbin -symbols"
4272         ar_default="xilib"
4273         target_os_default="win32"
4274         TMPDIR=.
4275     ;;
4276     gcov)
4277         add_cflags  -fprofile-arcs -ftest-coverage
4278         add_ldflags -fprofile-arcs -ftest-coverage
4279     ;;
4280     llvm-cov)
4281         add_cflags -fprofile-arcs -ftest-coverage
4282         add_ldflags --coverage
4283     ;;
4284     hardened)
4285         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4286         add_cflags   -fno-strict-overflow -fstack-protector-all
4287         add_ldflags  -Wl,-z,relro -Wl,-z,now
4288         add_cflags   -fPIE
4289         add_ldexeflags -fPIE -pie
4290     ;;
4291     ?*)
4292         die "Unknown toolchain $toolchain"
4293     ;;
4294 esac
4295
4296 if test -n "$cross_prefix"; then
4297     test -n "$arch" && test -n "$target_os" ||
4298         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4299     enable cross_compile
4300 fi
4301
4302 set_default target_os
4303 if test "$target_os" = android; then
4304     cc_default="clang"
4305 fi
4306
4307 ar_default="${cross_prefix}${ar_default}"
4308 cc_default="${cross_prefix}${cc_default}"
4309 cxx_default="${cross_prefix}${cxx_default}"
4310 nm_default="${cross_prefix}${nm_default}"
4311 pkg_config_default="${cross_prefix}${pkg_config_default}"
4312 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4313     ranlib_default="${cross_prefix}${ranlib_default} -D"
4314 else
4315     ranlib_default="${cross_prefix}${ranlib_default}"
4316 fi
4317 strip_default="${cross_prefix}${strip_default}"
4318 windres_default="${cross_prefix}${windres_default}"
4319
4320 sysinclude_default="${sysroot}/usr/include"
4321
4322 if enabled cuda_sdk; then
4323     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4324     enable cuda_nvcc
4325 fi
4326
4327 if enabled cuda_nvcc; then
4328     nvcc_default="nvcc"
4329     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4330 else
4331     nvcc_default="clang"
4332     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4333     NVCC_C=""
4334 fi
4335
4336 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4337     target_exec x86asmexe nvcc
4338 enabled cross_compile || host_cc_default=$cc
4339 set_default host_cc
4340
4341 pkg_config_fail_message=""
4342 if ! $pkg_config --version >/dev/null 2>&1; then
4343     warn "$pkg_config not found, library detection may fail."
4344     pkg_config=false
4345 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4346     pkg_config_fail_message="
4347 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4348 fi
4349
4350 if test $doxygen != $doxygen_default && \
4351   ! $doxygen --version >/dev/null 2>&1; then
4352     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4353 fi
4354
4355 exesuf() {
4356     case $1 in
4357         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4358     esac
4359 }
4360
4361 EXESUF=$(exesuf $target_os)
4362 HOSTEXESUF=$(exesuf $host_os)
4363
4364 # set temporary file name
4365 : ${TMPDIR:=$TEMPDIR}
4366 : ${TMPDIR:=$TMP}
4367 : ${TMPDIR:=/tmp}
4368
4369 if [ -n "$tempprefix" ] ; then
4370     mktemp(){
4371         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4372         echo "$tmpname"
4373         mkdir "$tmpname"
4374     }
4375 elif ! test_cmd mktemp -u XXXXXX; then
4376     # simple replacement for missing mktemp
4377     # NOT SAFE FOR GENERAL USE
4378     mktemp(){
4379         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4380         echo "$tmpname"
4381         mkdir "$tmpname"
4382     }
4383 fi
4384
4385 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4386     die "Unable to create temporary directory in $TMPDIR."
4387
4388 tmpfile(){
4389     tmp="${FFTMPDIR}/test"$2
4390     (set -C; exec > $tmp) 2> /dev/null ||
4391         die "Unable to create temporary file in $FFTMPDIR."
4392     eval $1=$tmp
4393 }
4394
4395 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4396 trap 'exit 2' INT
4397
4398 tmpfile TMPASM .asm
4399 tmpfile TMPC   .c
4400 tmpfile TMPCPP .cpp
4401 tmpfile TMPE   $EXESUF
4402 tmpfile TMPH   .h
4403 tmpfile TMPM   .m
4404 tmpfile TMPCU  .cu
4405 tmpfile TMPO   .o
4406 tmpfile TMPS   .S
4407 tmpfile TMPSH  .sh
4408 tmpfile TMPV   .ver
4409
4410 unset -f mktemp
4411
4412 chmod +x $TMPE
4413
4414 # make sure we can execute files in $TMPDIR
4415 cat > $TMPSH 2>> $logfile <<EOF
4416 #! /bin/sh
4417 EOF
4418 chmod +x $TMPSH >> $logfile 2>&1
4419 if ! $TMPSH >> $logfile 2>&1; then
4420     cat <<EOF
4421 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4422 variable to another directory and make sure that it is not mounted noexec.
4423 EOF
4424     die "Sanity test failed."
4425 fi
4426
4427 armasm_flags(){
4428     for flag; do
4429         case $flag in
4430             # Filter out MSVC cl.exe options from cflags that shouldn't
4431             # be passed to gas-preprocessor
4432             -M[TD]*)                                            ;;
4433             *)                  echo $flag                      ;;
4434         esac
4435    done
4436 }
4437
4438 cparser_flags(){
4439     for flag; do
4440         case $flag in
4441             -Wno-switch)             echo -Wno-switch-enum ;;
4442             -Wno-format-zero-length) ;;
4443             -Wdisabled-optimization) ;;
4444             -Wno-pointer-sign)       echo -Wno-other ;;
4445             *)                       echo $flag ;;
4446         esac
4447     done
4448 }
4449
4450 msvc_common_flags(){
4451     for flag; do
4452         case $flag in
4453             # In addition to specifying certain flags under the compiler
4454             # specific filters, they must be specified here as well or else the
4455             # generic catch all at the bottom will print the original flag.
4456             -Wall)                ;;
4457             -Wextra)              ;;
4458             -std=c*)              ;;
4459             # Common flags
4460             -fomit-frame-pointer) ;;
4461             -g)                   echo -Z7 ;;
4462             -fno-math-errno)      ;;
4463             -fno-common)          ;;
4464             -fno-signed-zeros)    ;;
4465             -fPIC)                ;;
4466             -mthumb)              ;;
4467             -march=*)             ;;
4468             -lz)                  echo zlib.lib ;;
4469             -lx264)               echo libx264.lib ;;
4470             -lstdc++)             ;;
4471             -l*)                  echo ${flag#-l}.lib ;;
4472             -LARGEADDRESSAWARE)   echo $flag ;;
4473             -L*)                  echo -libpath:${flag#-L} ;;
4474             -Wl,*)                ;;
4475             *)                    echo $flag ;;
4476         esac
4477     done
4478 }
4479
4480 msvc_flags(){
4481     msvc_common_flags "$@"
4482     for flag; do
4483         case $flag in
4484             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4485                                        -wd4554 ;;
4486             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4487                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4488                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4489                                        -wd4307 \
4490                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4491         esac
4492     done
4493 }
4494
4495 icl_flags(){
4496     msvc_common_flags "$@"
4497     for flag; do
4498         case $flag in
4499             # Despite what Intel's documentation says -Wall, which is supported
4500             # on Windows, does enable remarks so disable them here.
4501             -Wall)                echo $flag -Qdiag-disable:remark ;;
4502             -std=c99)             echo -Qstd=c99 ;;
4503             -flto)                echo -ipo ;;
4504         esac
4505     done
4506 }
4507
4508 icc_flags(){
4509     for flag; do
4510         case $flag in
4511             -flto)                echo -ipo ;;
4512             *)                    echo $flag ;;
4513         esac
4514     done
4515 }
4516
4517 suncc_flags(){
4518     for flag; do
4519         case $flag in
4520             -march=*|-mcpu=*)
4521                 case "${flag#*=}" in
4522                     native)                   echo -xtarget=native       ;;
4523                     v9|niagara)               echo -xarch=sparc          ;;
4524                     ultrasparc)               echo -xarch=sparcvis       ;;
4525                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4526                     i586|pentium)             echo -xchip=pentium        ;;
4527                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4528                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4529                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4530                     pentium4*)          echo -xtarget=pentium4           ;;
4531                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4532                     *-sse3)             echo -xarch=sse3                 ;;
4533                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4534                     bonnell)                   echo -xarch=ssse3         ;;
4535                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4536                     westmere)                  echo -xtarget=westmere    ;;
4537                     silvermont)                echo -xarch=sse4_2        ;;
4538                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4539                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4540                                                echo -xarch=avx           ;;
4541                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4542                     btver1)                    echo -xarch=amdsse4a      ;;
4543                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4544                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4545                     k8|opteron|athlon64|athlon-fx)
4546                                                echo -xarch=sse2a         ;;
4547                     athlon*)                   echo -xarch=pentium_proa  ;;
4548                 esac
4549                 ;;
4550             -std=c99)             echo -xc99              ;;
4551             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4552             -fPIC)                echo -KPIC -xcode=pic32 ;;
4553             -W*,*)                echo $flag              ;;
4554             -f*-*|-W*|-mimpure-text)                      ;;
4555             -shared)              echo -G                 ;;
4556             *)                    echo $flag              ;;
4557         esac
4558     done
4559 }
4560
4561 probe_cc(){
4562     pfx=$1
4563     _cc=$2
4564     first=$3
4565
4566     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4567     unset _ld_o _ldflags _ld_lib _ld_path
4568     unset _depflags _DEPCMD _DEPFLAGS
4569     _flags_filter=echo
4570
4571     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4572         true # no-op to avoid reading stdin in following checks
4573     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4574         _type=llvm_gcc
4575         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4576         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4577         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4578         _cflags_speed='-O3'
4579         _cflags_size='-Os'
4580     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4581         _type=gcc
4582         gcc_version=$($_cc --version | head -n1)
4583         gcc_basever=$($_cc -dumpversion)
4584         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4585         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4586         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4587         case $gcc_basever in
4588             2) ;;
4589             2.*) ;;
4590             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4591         esac
4592         if [ "$first" = true ]; then
4593             case $gcc_basever in
4594                 4.2*)
4595                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4596             esac
4597         fi
4598         _cflags_speed='-O3'
4599         _cflags_size='-Os'
4600     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4601         _type=icc
4602         _ident=$($_cc --version | head -n1)
4603         _depflags='-MMD'
4604         _cflags_speed='-O3'
4605         _cflags_size='-Os'
4606         _cflags_noopt='-O1'
4607         _flags_filter=icc_flags
4608     elif $_cc -v 2>&1 | grep -q xlc; then
4609         _type=xlc
4610         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4611         _cflags_speed='-O5'
4612         _cflags_size='-O5 -qcompact'
4613     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4614         test -d "$sysroot" || die "No valid sysroot specified."
4615         _type=armcc
4616         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4617         armcc_conf="$PWD/armcc.conf"
4618         $_cc --arm_linux_configure                 \
4619              --arm_linux_config_file="$armcc_conf" \
4620              --configure_sysroot="$sysroot"        \
4621              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4622              die "Error creating armcc configuration file."
4623         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4624         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4625         as_default="${cross_prefix}gcc"
4626         _depflags='-MMD'
4627         _cflags_speed='-O3'
4628         _cflags_size='-Os'
4629     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4630         _type=clang
4631         _ident=$($_cc --version 2>/dev/null | head -n1)
4632         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4633         _cflags_speed='-O3'
4634         _cflags_size='-Oz'
4635     elif $_cc -V 2>&1 | grep -q Sun; then
4636         _type=suncc
4637         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4638         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4639         _DEPFLAGS='-xM1 -xc99'
4640         _ldflags='-std=c99'
4641         _cflags_speed='-O5'
4642         _cflags_size='-O5 -xspace'
4643         _flags_filter=suncc_flags
4644     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4645         _type=pathscale
4646         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4647         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4648         _cflags_speed='-O2'
4649         _cflags_size='-Os'
4650         _flags_filter='filter_out -Wdisabled-optimization'
4651     elif $_cc -v 2>&1 | grep -q Open64; then
4652         _type=open64
4653         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4654         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4655         _cflags_speed='-O2'
4656         _cflags_size='-Os'
4657         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4658     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4659         _type=armasm
4660         _ident=$($_cc | head -n1)
4661         # 4509: "This form of conditional instruction is deprecated"
4662         _flags="-nologo -ignore 4509"
4663         _flags_filter=armasm_flags
4664     elif $_cc 2>&1 | grep -q Intel; then
4665         _type=icl
4666         _ident=$($_cc 2>&1 | head -n1)
4667         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4668         # Not only is O3 broken on 13.x+ but it is slower on all previous
4669         # versions (tested) as well.
4670         _cflags_speed="-O2"
4671         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4672         if $_cc 2>&1 | grep -q Linker; then
4673             _ld_o='-out:$@'
4674         else
4675             _ld_o='-Fe$@'
4676         fi
4677         _cc_o='-Fo$@'
4678         _cc_e='-P'
4679         _flags_filter=icl_flags
4680         _ld_lib='lib%.a'
4681         _ld_path='-libpath:'
4682         # -Qdiag-error to make icl error when seeing certain unknown arguments
4683         _flags='-nologo -Qdiag-error:4044,10157'
4684         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4685         # with MSVC which enables it by default.
4686         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4687         disable stripping
4688     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4689         # lld can emulate multiple different linkers; in ms link.exe mode,
4690         # the -? parameter gives the help output which contains an identifyable
4691         # string, while it gives an error in other modes.
4692         _type=lld-link
4693         # The link.exe mode doesn't have a switch for getting the version,
4694         # but we can force it back to gnu mode and get the version from there.
4695         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4696         _ld_o='-out:$@'
4697         _flags_filter=msvc_flags
4698         _ld_lib='lib%.a'
4699         _ld_path='-libpath:'
4700     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4701         _type=msvc
4702         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4703             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4704         else
4705             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4706         fi
4707         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4708         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4709         _cflags_speed="-O2"
4710         _cflags_size="-O1"
4711         _cflags_noopt="-O1"
4712         if $_cc -nologo- 2>&1 | grep -q Linker; then
4713             _ld_o='-out:$@'
4714         else
4715             _ld_o='-Fe$@'
4716         fi
4717         _cc_o='-Fo$@'
4718         _cc_e='-P -Fi$@'
4719         _flags_filter=msvc_flags
4720         _ld_lib='lib%.a'
4721         _ld_path='-libpath:'
4722         _flags='-nologo'
4723         disable stripping
4724     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4725         _type=cparser
4726         _ident=$($_cc --version | head -n1)
4727         _depflags='-MMD'
4728         _cflags_speed='-O4'
4729         _cflags_size='-O2'
4730         _flags_filter=cparser_flags
4731     fi
4732
4733     eval ${pfx}_type=\$_type
4734     eval ${pfx}_ident=\$_ident
4735 }
4736
4737 set_ccvars(){
4738     eval ${1}_C=\${_cc_c-\${${1}_C}}
4739     eval ${1}_E=\${_cc_e-\${${1}_E}}
4740     eval ${1}_O=\${_cc_o-\${${1}_O}}
4741
4742     if [ -n "$_depflags" ]; then
4743         eval ${1}_DEPFLAGS=\$_depflags
4744     else
4745         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4746         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4747         eval DEP${1}FLAGS=\$_flags
4748     fi
4749 }
4750
4751 probe_cc cc "$cc" "true"
4752 cflags_filter=$_flags_filter
4753 cflags_speed=$_cflags_speed
4754 cflags_size=$_cflags_size
4755 cflags_noopt=$_cflags_noopt
4756 add_cflags $_flags $_cflags
4757 cc_ldflags=$_ldflags
4758 set_ccvars CC
4759 set_ccvars CXX
4760
4761 probe_cc hostcc "$host_cc"
4762 host_cflags_filter=$_flags_filter
4763 host_cflags_speed=$_cflags_speed
4764 add_host_cflags  $_flags $_cflags
4765 set_ccvars HOSTCC
4766
4767 test -n "$cc_type" && enable $cc_type ||
4768     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4769
4770 : ${as_default:=$cc}
4771 : ${objcc_default:=$cc}
4772 : ${dep_cc_default:=$cc}
4773 : ${ld_default:=$cc}
4774 : ${host_ld_default:=$host_cc}
4775 set_default ar as objcc dep_cc ld ln_s host_ld windres
4776
4777 probe_cc as "$as"
4778 asflags_filter=$_flags_filter
4779 add_asflags $_flags $_cflags
4780 set_ccvars AS
4781
4782 probe_cc objcc "$objcc"
4783 objcflags_filter=$_flags_filter
4784 add_objcflags $_flags $_cflags
4785 set_ccvars OBJC
4786
4787 probe_cc ld "$ld"
4788 ldflags_filter=$_flags_filter
4789 add_ldflags $_flags $_ldflags
4790 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4791 LD_O=${_ld_o-$LD_O}
4792 LD_LIB=${_ld_lib-$LD_LIB}
4793 LD_PATH=${_ld_path-$LD_PATH}
4794
4795 probe_cc hostld "$host_ld"
4796 host_ldflags_filter=$_flags_filter
4797 add_host_ldflags $_flags $_ldflags
4798 HOSTLD_O=${_ld_o-$HOSTLD_O}
4799
4800 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4801     probe_cc depcc "$dep_cc"
4802     CCDEP=${_DEPCMD:-$DEPCMD}
4803     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4804     DEPCCFLAGS=$_flags
4805 fi
4806
4807 if $ar 2>&1 | grep -q Microsoft; then
4808     arflags="-nologo"
4809     ar_o='-out:$@'
4810 elif $ar 2>&1 | grep -q "\[D\] "; then
4811     arflags="rcD"
4812     ar_o='$@'
4813 else
4814     arflags="rc"
4815     ar_o='$@'
4816 fi
4817
4818 add_cflags $extra_cflags
4819 add_cxxflags $extra_cxxflags
4820 add_objcflags $extra_objcflags
4821 add_asflags $extra_cflags
4822
4823 if test -n "$sysroot"; then
4824     case "$cc_type" in
4825         gcc|llvm_gcc|clang)
4826             add_cppflags --sysroot="$sysroot"
4827             add_ldflags --sysroot="$sysroot"
4828         ;;
4829     esac
4830 fi
4831
4832 if test "$cpu" = host; then
4833     enabled cross_compile &&
4834         warn "--cpu=host makes no sense when cross-compiling."
4835
4836     case "$cc_type" in
4837         gcc|llvm_gcc)
4838             check_native(){
4839                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4840                 sed -n "/cc1.*$1=/{
4841                             s/.*$1=\\([^ ]*\\).*/\\1/
4842                             p
4843                             q
4844                         }" $TMPE
4845             }
4846             cpu=$(check_native -march || check_native -mcpu)
4847         ;;
4848         clang)
4849             check_native(){
4850                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4851                 sed -n "/cc1.*-target-cpu /{
4852                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4853                             p
4854                             q
4855                         }" $TMPE
4856             }
4857             cpu=$(check_native -march)
4858         ;;
4859     esac
4860
4861     test "${cpu:-host}" = host &&
4862         die "--cpu=host not supported with compiler $cc"
4863 fi
4864
4865 # Deal with common $arch aliases
4866 case "$arch" in
4867     aarch64|arm64)
4868         arch="aarch64"
4869     ;;
4870     arm*|iPad*|iPhone*)
4871         arch="arm"
4872     ;;
4873     mips*|IP*)
4874         case "$arch" in
4875         *el)
4876             add_cppflags -EL
4877             add_ldflags -EL
4878         ;;
4879         *eb)
4880             add_cppflags -EB
4881             add_ldflags -EB
4882         ;;
4883         esac
4884         arch="mips"
4885     ;;
4886     parisc*|hppa*)
4887         arch="parisc"
4888     ;;
4889     "Power Macintosh"|ppc*|powerpc*)
4890         arch="ppc"
4891     ;;
4892     s390|s390x)
4893         arch="s390"
4894     ;;
4895     sh4|sh)
4896         arch="sh4"
4897     ;;
4898     sun4*|sparc*)
4899         arch="sparc"
4900     ;;
4901     tilegx|tile-gx)
4902         arch="tilegx"
4903     ;;
4904     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4905         arch="x86"
4906     ;;
4907 esac
4908
4909 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4910 enable $arch
4911
4912 # Add processor-specific flags
4913 if enabled aarch64; then
4914
4915     case $cpu in
4916         armv*)
4917             cpuflags="-march=$cpu"
4918         ;;
4919         *)
4920             cpuflags="-mcpu=$cpu"
4921         ;;
4922     esac
4923
4924 elif enabled alpha; then
4925
4926     cpuflags="-mcpu=$cpu"
4927
4928 elif enabled arm; then
4929
4930     check_arm_arch() {
4931         test_cpp_condition stddef.h \
4932             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4933             $cpuflags
4934     }
4935
4936     probe_arm_arch() {
4937         if   check_arm_arch 4;        then echo armv4
4938         elif check_arm_arch 4T;       then echo armv4t
4939         elif check_arm_arch 5;        then echo armv5
4940         elif check_arm_arch 5E;       then echo armv5e
4941         elif check_arm_arch 5T;       then echo armv5t
4942         elif check_arm_arch 5TE;      then echo armv5te
4943         elif check_arm_arch 5TEJ;     then echo armv5te
4944         elif check_arm_arch 6;        then echo armv6
4945         elif check_arm_arch 6J;       then echo armv6j
4946         elif check_arm_arch 6K;       then echo armv6k
4947         elif check_arm_arch 6Z;       then echo armv6z
4948         elif check_arm_arch 6KZ;      then echo armv6zk
4949         elif check_arm_arch 6ZK;      then echo armv6zk
4950         elif check_arm_arch 6T2;      then echo armv6t2
4951         elif check_arm_arch 7;        then echo armv7
4952         elif check_arm_arch 7A  7_A;  then echo armv7-a
4953         elif check_arm_arch 7S;       then echo armv7-a
4954         elif check_arm_arch 7R  7_R;  then echo armv7-r
4955         elif check_arm_arch 7M  7_M;  then echo armv7-m
4956         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4957         elif check_arm_arch 8A  8_A;  then echo armv8-a
4958         fi
4959     }
4960
4961     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4962
4963     case $cpu in
4964         armv*)
4965             cpuflags="-march=$cpu"
4966             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4967         ;;
4968         *)
4969             cpuflags="-mcpu=$cpu"
4970             case $cpu in
4971                 cortex-a*)                               subarch=armv7a  ;;
4972                 cortex-r*)                               subarch=armv7r  ;;
4973                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4974                 arm11*)                                  subarch=armv6   ;;
4975                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4976                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4977                 *)                             subarch=$(probe_arm_arch) ;;
4978             esac
4979         ;;
4980     esac
4981
4982     case "$subarch" in
4983         armv5t*)    enable fast_clz                ;;
4984         armv[6-8]*)
4985             enable fast_clz
4986             disabled fast_unaligned || enable fast_unaligned
4987             ;;
4988     esac
4989
4990 elif enabled avr32; then
4991
4992     case $cpu in
4993         ap7[02]0[0-2])
4994             subarch="avr32_ap"
4995             cpuflags="-mpart=$cpu"
4996         ;;
4997         ap)
4998             subarch="avr32_ap"
4999             cpuflags="-march=$cpu"
5000         ;;
5001         uc3[ab]*)
5002             subarch="avr32_uc"
5003             cpuflags="-mcpu=$cpu"
5004         ;;
5005         uc)
5006             subarch="avr32_uc"
5007             cpuflags="-march=$cpu"
5008         ;;
5009     esac
5010
5011 elif enabled bfin; then
5012
5013     cpuflags="-mcpu=$cpu"
5014
5015 elif enabled mips; then
5016
5017     if [ "$cpu" != "generic" ]; then
5018         disable mips32r2
5019         disable mips32r5
5020         disable mips64r2
5021         disable mips32r6
5022         disable mips64r6
5023         disable loongson2
5024         disable loongson3
5025         disable mipsdsp
5026         disable mipsdspr2
5027
5028         cpuflags="-march=$cpu"
5029
5030         case $cpu in
5031             # General ISA levels
5032             mips1|mips3)
5033             ;;
5034             mips32r2)
5035                 enable mips32r2
5036             ;;
5037             mips32r5)
5038                 enable mips32r2
5039                 enable mips32r5
5040             ;;
5041             mips64r2|mips64r5)
5042                 enable mips64r2
5043                 enable loongson3
5044             ;;
5045             # Cores from MIPS(MTI)
5046             24kc)
5047                 disable mipsfpu
5048                 enable mips32r2
5049             ;;
5050             24kf*|24kec|34kc|74Kc|1004kc)
5051                 enable mips32r2
5052             ;;
5053             24kef*|34kf*|1004kf*)
5054                 enable mipsdsp
5055                 enable mips32r2
5056             ;;
5057             p5600)
5058                 enable mips32r2
5059                 enable mips32r5
5060                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5061             ;;
5062             i6400)
5063                 enable mips64r6
5064                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5065             ;;
5066             p6600)
5067                 enable mips64r6
5068                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5069             ;;
5070             # Cores from Loongson
5071             loongson2e|loongson2f|loongson3*)
5072                 enable local_aligned
5073                 enable simd_align_16
5074                 enable fast_64bit
5075                 enable fast_clz
5076                 enable fast_cmov
5077                 enable fast_unaligned
5078                 disable aligned_stack
5079                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5080                 if test "$cc_type" = "gcc"; then
5081                     case $gcc_basever in
5082                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5083                         expensive_optimization_flag="-fno-expensive-optimizations"
5084                         ;;
5085                         *)
5086                         expensive_optimization_flag=""
5087                         ;;
5088                     esac
5089                 fi
5090
5091                 case $cpu in
5092                     loongson3*)
5093                         enable loongson3
5094                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5095                     ;;
5096                     loongson2e)
5097                         enable loongson2
5098                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5099                     ;;
5100                     loongson2f)
5101                         enable loongson2
5102                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5103                     ;;
5104                 esac
5105             ;;
5106             *)
5107                 warn "unknown MIPS CPU"
5108             ;;
5109         esac
5110
5111     else
5112         disable mipsdsp
5113         disable mipsdspr2
5114         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5115         warn 'generic cpu selected'
5116     fi
5117
5118 elif enabled ppc; then
5119
5120     disable ldbrx
5121
5122     case $(tolower $cpu) in
5123         601|ppc601|powerpc601)
5124             cpuflags="-mcpu=601"
5125             disable altivec
5126         ;;
5127         603*|ppc603*|powerpc603*)
5128             cpuflags="-mcpu=603"
5129             disable altivec
5130         ;;
5131         604*|ppc604*|powerpc604*)
5132             cpuflags="-mcpu=604"
5133             disable altivec
5134         ;;
5135         g3|75*|ppc75*|powerpc75*)
5136             cpuflags="-mcpu=750"
5137             disable altivec
5138         ;;
5139         g4|745*|ppc745*|powerpc745*)
5140             cpuflags="-mcpu=7450"
5141             disable vsx
5142         ;;
5143         74*|ppc74*|powerpc74*)
5144             cpuflags="-mcpu=7400"
5145             disable vsx
5146         ;;
5147         g5|970|ppc970|powerpc970)
5148             cpuflags="-mcpu=970"
5149             disable vsx
5150         ;;
5151         power[3-6]*)
5152             cpuflags="-mcpu=$cpu"
5153             disable vsx
5154         ;;
5155         power[7-8]*)
5156             cpuflags="-mcpu=$cpu"
5157         ;;
5158         cell)
5159             cpuflags="-mcpu=cell"
5160             enable ldbrx
5161             disable vsx
5162         ;;
5163         e500mc)
5164             cpuflags="-mcpu=e500mc"
5165             disable altivec
5166         ;;
5167         e500v2)
5168             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5169             disable altivec
5170             disable dcbzl
5171         ;;
5172         e500)
5173             cpuflags="-mcpu=8540 -mhard-float"
5174             disable altivec
5175             disable dcbzl
5176         ;;
5177     esac
5178
5179 elif enabled sparc; then
5180
5181     case $cpu in
5182         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5183             cpuflags="-mcpu=$cpu"
5184         ;;
5185         ultrasparc*|niagara[234])
5186             cpuflags="-mcpu=$cpu"
5187         ;;
5188     esac
5189
5190 elif enabled x86; then
5191
5192     case $cpu in
5193         i[345]86|pentium)
5194             cpuflags="-march=$cpu"
5195             disable i686
5196             disable mmx
5197         ;;
5198         # targets that do NOT support nopl and conditional mov (cmov)
5199         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5200             cpuflags="-march=$cpu"
5201             disable i686
5202         ;;
5203         # targets that do support nopl and conditional mov (cmov)
5204         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5205         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5206         |amdfam10|barcelona|b[dt]ver*|znver*)
5207             cpuflags="-march=$cpu"
5208             enable i686
5209             enable fast_cmov
5210         ;;
5211         # targets that do support conditional mov but on which it's slow
5212         pentium4|pentium4m|prescott|nocona)
5213             cpuflags="-march=$cpu"
5214             enable i686
5215             disable fast_cmov
5216         ;;
5217     esac
5218
5219 fi
5220
5221 if [ "$cpu" != generic ]; then
5222     add_cflags  $cpuflags
5223     add_asflags $cpuflags
5224     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5225 fi
5226
5227 # compiler sanity check
5228 test_exec <<EOF
5229 int main(void){ return 0; }
5230 EOF
5231 if test "$?" != 0; then
5232     echo "$cc is unable to create an executable file."
5233     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5234         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5235         echo "Only do this if you know what cross compiling means."
5236     fi
5237     die "C compiler test failed."
5238 fi
5239
5240 add_cppflags -D_ISOC99_SOURCE
5241 add_cxxflags -D__STDC_CONSTANT_MACROS
5242 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5243
5244 # some compilers silently accept -std=c11, so we also need to check that the
5245 # version macro is defined properly
5246 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5247     add_cflags -std=c11 ||
5248     check_cflags -std=c99
5249
5250 check_cppflags -D_FILE_OFFSET_BITS=64
5251 check_cppflags -D_LARGEFILE_SOURCE
5252
5253 add_host_cppflags -D_ISOC99_SOURCE
5254 check_host_cflags -std=c99
5255 check_host_cflags -Wall
5256 check_host_cflags $host_cflags_speed
5257
5258 check_64bit(){
5259     arch32=$1
5260     arch64=$2
5261     expr=${3:-'sizeof(void *) > 4'}
5262     test_code cc "" "int test[2*($expr) - 1]" &&
5263         subarch=$arch64 || subarch=$arch32
5264     enable $subarch
5265 }
5266
5267 case "$arch" in
5268     aarch64|alpha|ia64)
5269         enabled shared && enable_weak pic
5270     ;;
5271     mips)
5272         check_64bit mips mips64 '_MIPS_SIM > 1'
5273         enabled shared && enable_weak pic
5274     ;;
5275     parisc)
5276         check_64bit parisc parisc64
5277         enabled shared && enable_weak pic
5278     ;;
5279     ppc)
5280         check_64bit ppc ppc64
5281         enabled shared && enable_weak pic
5282     ;;
5283     s390)
5284         check_64bit s390 s390x
5285         enabled shared && enable_weak pic
5286     ;;
5287     sparc)
5288         check_64bit sparc sparc64
5289         enabled shared && enable_weak pic
5290     ;;
5291     x86)
5292         check_64bit x86_32 x86_64
5293         # Treat x32 as x64 for now. Note it also needs pic if shared
5294         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5295             subarch=x86_64 && enable x86_64 && disable x86_32
5296         if enabled x86_64; then
5297             enabled shared && enable_weak pic
5298             objformat=elf64
5299         fi
5300     ;;
5301 esac
5302
5303 # OS specific
5304 case $target_os in
5305     aix)
5306         SHFLAGS=-shared
5307         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5308         enabled shared && add_ldflags -Wl,-brtl
5309         arflags='-Xany -r -c'
5310         striptype=""
5311         ;;
5312     android)
5313         disable symver
5314         enable section_data_rel_ro
5315         add_cflags -fPIE
5316         add_ldexeflags -fPIE -pie
5317         SLIB_INSTALL_NAME='$(SLIBNAME)'
5318         SLIB_INSTALL_LINKS=
5319         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5320         ;;
5321     haiku)
5322         prefix_default="/boot/common"
5323         network_extralibs="-lnetwork"
5324         host_extralibs=
5325         ;;
5326     sunos)
5327         SHFLAGS='-shared -Wl,-h,$$(@F)'
5328         enabled x86 && append SHFLAGS -mimpure-text
5329         network_extralibs="-lsocket -lnsl"
5330         add_cppflags -D__EXTENSIONS__
5331         # When using suncc to build, the Solaris linker will mark
5332         # an executable with each instruction set encountered by
5333         # the Solaris assembler.  As our libraries contain their own
5334         # guards for processor-specific code, instead suppress
5335         # generation of the HWCAPS ELF section on Solaris x86 only.
5336         enabled_all suncc x86 &&
5337             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5338             add_ldflags -Wl,-M,mapfile
5339         nm_default='nm -P -g'
5340         striptype=""
5341         version_script='-M'
5342         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5343         ;;
5344     netbsd)
5345         disable symver
5346         oss_indev_extralibs="-lossaudio"
5347         oss_outdev_extralibs="-lossaudio"
5348         enabled gcc || check_ldflags -Wl,-zmuldefs
5349         ;;
5350     openbsd|bitrig)
5351         disable symver
5352         enable section_data_rel_ro
5353         striptype=""
5354         SHFLAGS='-shared'
5355         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5356         SLIB_INSTALL_LINKS=
5357         oss_indev_extralibs="-lossaudio"
5358         oss_outdev_extralibs="-lossaudio"
5359         ;;
5360     dragonfly)
5361         disable symver
5362         ;;
5363     freebsd)
5364         ;;
5365     bsd/os)
5366         add_extralibs -lpoll -lgnugetopt
5367         strip="strip -d"
5368         ;;
5369     darwin)
5370         enabled ppc && add_asflags -force_cpusubtype_ALL
5371         install_name_dir_default='$(SHLIBDIR)'
5372         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5373         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5374         strip="${strip} -x"
5375         add_ldflags -Wl,-dynamic,-search_paths_first
5376         check_cflags -Werror=partial-availability
5377         SLIBSUF=".dylib"
5378         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5379         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5380         enabled x86_64 && objformat="macho64" || objformat="macho32"
5381         enabled_any pic shared x86_64 ||
5382             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5383         check_headers dispatch/dispatch.h &&
5384             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5385         if test -n "$sysroot"; then
5386             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5387             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5388         fi
5389         version_script='-exported_symbols_list'
5390         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5391         # Workaround for Xcode 11 -fstack-check bug
5392         if enabled clang; then
5393             clang_version=$($cc -dumpversion)
5394             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5395         fi
5396         ;;
5397     msys*)
5398         die "Native MSYS builds are discouraged, please use the MINGW environment."
5399         ;;
5400     mingw32*|mingw64*)
5401         target_os=mingw32
5402         LIBTARGET=i386
5403         if enabled x86_64; then
5404             LIBTARGET="i386:x86-64"
5405         elif enabled arm; then
5406             LIBTARGET="arm"
5407         elif enabled aarch64; then
5408             LIBTARGET="arm64"
5409         fi
5410         if enabled shared; then
5411             # Cannot build both shared and static libs when using dllimport.
5412             disable static
5413         fi
5414         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5415         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5416         shlibdir_default="$bindir_default"
5417         SLIBPREF=""
5418         SLIBSUF=".dll"
5419         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5420         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5421         if test_cmd lib.exe -list; then
5422             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5423             if enabled x86_64; then
5424                 LIBTARGET=x64
5425             fi
5426         else
5427             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5428         fi
5429         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5430         SLIB_INSTALL_LINKS=
5431         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5432         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5433         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5434         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5435         enabled x86_64 && objformat="win64" || objformat="win32"
5436         dlltool="${cross_prefix}dlltool"
5437         ranlib=:
5438         enable dos_paths
5439         check_ldflags -Wl,--nxcompat,--dynamicbase
5440         # Lets work around some stupidity in binutils.
5441         # ld will strip relocations from executables even though we need them
5442         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5443         # however ld then forgets what the entry point should be (oops) so we
5444         # have to manually (re)set it.
5445         if enabled x86_32; then
5446             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5447         elif enabled x86_64; then
5448             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5449             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5450             # Set image base >4GB for extra entropy with HEASLR
5451             add_ldexeflags -Wl,--image-base,0x140000000
5452             append SHFLAGS -Wl,--image-base,0x180000000
5453         fi
5454         ;;
5455     win32|win64)
5456         disable symver
5457         if enabled shared; then
5458             # Link to the import library instead of the normal static library
5459             # for shared libs.
5460             LD_LIB='%.lib'
5461             # Cannot build both shared and static libs with MSVC or icl.
5462             disable static
5463         fi
5464         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5465         shlibdir_default="$bindir_default"
5466         SLIBPREF=""
5467         SLIBSUF=".dll"
5468         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5469         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5470         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5471         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5472         SLIB_INSTALL_LINKS=
5473         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5474         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5475         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5476         enabled x86_64 && objformat="win64" || objformat="win32"
5477         ranlib=:
5478         enable dos_paths
5479         ;;
5480     cygwin*)
5481         target_os=cygwin
5482         shlibdir_default="$bindir_default"
5483         SLIBPREF="cyg"
5484         SLIBSUF=".dll"
5485         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5486         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5487         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5488         SLIB_INSTALL_LINKS=
5489         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5490         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5491         enabled x86_64 && objformat="win64" || objformat="win32"
5492         enable dos_paths
5493         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5494         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5495         ;;
5496     *-dos|freedos|opendos)
5497         network_extralibs="-lsocket"
5498         objformat="coff"
5499         enable dos_paths
5500         ;;
5501     linux)
5502         enable section_data_rel_ro
5503         enabled_any arm aarch64 && enable_weak linux_perf
5504         ;;
5505     irix*)
5506         target_os=irix
5507         ranlib="echo ignoring ranlib"
5508         ;;
5509     os/2*)
5510         strip="lxlite -CS"
5511         striptype=""
5512         objformat="aout"
5513         add_cppflags -D_GNU_SOURCE
5514         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5515         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5516         LIBSUF="_s.a"
5517         SLIBPREF=""
5518         SLIBSUF=".dll"
5519         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5520         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5521         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5522             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5523             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5524             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5525             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5526         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5527             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5528         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5529         SLIB_INSTALL_LINKS=
5530         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5531         enable dos_paths
5532         enable_weak os2threads
5533         ;;
5534     gnu/kfreebsd)
5535         add_cppflags -D_BSD_SOURCE
5536         ;;
5537     gnu)
5538         ;;
5539     qnx)
5540         add_cppflags -D_QNX_SOURCE
5541         network_extralibs="-lsocket"
5542         ;;
5543     symbian)
5544         SLIBSUF=".dll"
5545         enable dos_paths
5546         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5547         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5548         add_ldflags -Wl,--target1-abs,--no-undefined \
5549                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5550                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5551         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5552                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5553                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5554         ;;
5555     minix)
5556         ;;
5557     none)
5558         ;;
5559     *)
5560         die "Unknown OS '$target_os'."
5561         ;;
5562 esac
5563
5564 # test if creating links works
5565 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5566 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5567 mkdir "$link_dest"
5568 $ln_s "$link_dest" "$link_name"
5569 touch "$link_dest/test_file"
5570 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5571     # create link to source path
5572     [ -e src ] && rm src
5573     $ln_s "$source_path" src
5574     source_link=src
5575 else
5576     # creating directory links doesn't work
5577     # fall back to using the full source path
5578     source_link="$source_path"
5579 fi
5580 # cleanup
5581 rm -r "$link_dest"
5582 rm -r "$link_name"
5583
5584 # determine libc flavour
5585
5586 probe_libc(){
5587     pfx=$1
5588     pfx_no_=${pfx%_}
5589     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5590     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5591         eval ${pfx}libc_type=uclibc
5592         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5593     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5594         eval ${pfx}libc_type=glibc
5595         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5596     # MinGW headers can be installed on Cygwin, so check for newlib first.
5597     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5598         eval ${pfx}libc_type=newlib
5599         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5600     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5601     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5602         eval ${pfx}libc_type=mingw64
5603         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5604             add_compat msvcrt/snprintf.o
5605             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5606         fi
5607         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5608         eval test \$${pfx_no_}cc_type = "gcc" &&
5609             add_${pfx}cppflags -D__printf__=__gnu_printf__
5610         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5611             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5612         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5613     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5614          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5615         eval ${pfx}libc_type=mingw32
5616         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5617             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5618             die "ERROR: MinGW32 runtime version must be >= 3.15."
5619         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5620         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5621             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5622         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5623             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5624         eval test \$${pfx_no_}cc_type = "gcc" &&
5625             add_${pfx}cppflags -D__printf__=__gnu_printf__
5626         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5627     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5628         eval ${pfx}libc_type=msvcrt
5629         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5630             if [ "$pfx" = host_ ]; then
5631                 add_host_cppflags -Dsnprintf=_snprintf
5632             else
5633                 add_compat strtod.o strtod=avpriv_strtod
5634                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5635                                              _snprintf=avpriv_snprintf  \
5636                                              vsnprintf=avpriv_vsnprintf
5637             fi
5638         fi
5639         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5640         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5641         # 0x601 by default unless something else is set by the user.
5642         # This can easily lead to us detecting functions only present
5643         # in such new versions and producing binaries requiring windows 7.0.
5644         # Therefore explicitly set the default to Vista unless the user has
5645         # set something else on the command line.
5646         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5647         # family. For these cases, configure is free to use any functions
5648         # found in the SDK headers by default. (Alternatively, we could force
5649         # _WIN32_WINNT to 0x0602 in that case.)
5650         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5651             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5652 #ifdef WINAPI_FAMILY
5653 #include <winapifamily.h>
5654 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5655 #error not desktop
5656 #endif
5657 #endif
5658 EOF
5659         if [ "$pfx" = "" ]; then
5660             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5661             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5662         fi
5663     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5664         eval ${pfx}libc_type=klibc
5665     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5666         eval ${pfx}libc_type=bionic
5667     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5668         eval ${pfx}libc_type=solaris
5669         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5670     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5671         eval ${pfx}libc_type=djgpp
5672         add_cppflags -U__STRICT_ANSI__
5673         add_cflags "-include $source_path/compat/djgpp/math.h"
5674         add_compat djgpp/math.o
5675     fi
5676     test_${pfx}cc <<EOF
5677 #include <time.h>
5678 void *v = localtime_r;
5679 EOF
5680 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5681 #include <time.h>
5682 void *v = localtime_r;
5683 EOF
5684
5685     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5686 }
5687
5688 probe_libc
5689 probe_libc host_
5690
5691 # hacks for compiler/libc/os combinations
5692
5693 case $libc_type in
5694     bionic)
5695         add_compat strtod.o strtod=avpriv_strtod
5696         ;;
5697 esac
5698
5699 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5700     add_cppflags '-I\$(SRC_PATH)/compat/float'
5701
5702 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5703
5704 set_default libdir
5705 : ${shlibdir_default:="$libdir"}
5706 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5707
5708 set_default $PATHS_LIST
5709 set_default nm
5710
5711 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5712
5713 enable_weak_pic() {
5714     disabled pic && return
5715     enable pic
5716     add_cppflags -DPIC
5717     case "$target_os" in
5718     mingw*|cygwin*|win*)
5719         ;;
5720     *)
5721         add_cflags -fPIC
5722         add_asflags -fPIC
5723         ;;
5724     esac
5725 }
5726
5727 enabled pic && enable_weak_pic
5728
5729 test_cc <<EOF || die "Symbol mangling check failed."
5730 int ff_extern;
5731 EOF
5732 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5733 extern_prefix=${sym%%ff_extern*}
5734
5735 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5736
5737 for restrict_keyword in restrict __restrict__ __restrict ""; do
5738     test_code cc "" "char * $restrict_keyword p" && break
5739 done
5740
5741 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5742
5743 # The global variable ensures the bits appear unchanged in the object file.
5744 test_cc <<EOF || die "endian test failed"
5745 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5746 EOF
5747 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5748
5749 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5750
5751 if ! enabled ppc64 || enabled bigendian; then
5752     disable vsx
5753 fi
5754
5755 check_gas() {
5756     log "check_gas using '$as' as AS"
5757     # :vararg is used on aarch64, arm and ppc altivec
5758     check_as vararg "
5759 .macro m n, y:vararg=0
5760 \n: .int \y
5761 .endm
5762 m x" || return 1
5763     # .altmacro is only used in arm asm
5764     ! enabled arm || check_as gnu_as ".altmacro"
5765 }
5766
5767 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5768     nogas=:
5769     enabled_any arm aarch64 && nogas=die
5770     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5771     as_noop=-v
5772
5773     case $as_type in
5774         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5775         gcc)  gaspp_as_type=gas ;;
5776         *)    gaspp_as_type=$as_type ;;
5777     esac
5778
5779     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5780
5781     test "${as#*gas-preprocessor.pl}" != "$as" ||
5782     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5783         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5784
5785     if ! check_gas ; then
5786         as=${gas:=$as}
5787         check_gas || \
5788             $nogas "GNU assembler not found, install/update gas-preprocessor"
5789     fi
5790
5791     check_as as_func ".func test
5792                       .endfunc"
5793 fi
5794
5795 check_inline_asm inline_asm_labels '"1:\n"'
5796
5797 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5798
5799 if enabled aarch64; then
5800     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5801     # internal assembler in clang 3.3 does not support this instruction
5802     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5803     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5804
5805     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5806
5807 elif enabled alpha; then
5808
5809     check_cflags -mieee
5810
5811 elif enabled arm; then
5812
5813     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5814     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5815 float func(float a, float b){ return a+b; }
5816 EOF
5817     enabled thumb && check_cflags -mthumb || check_cflags -marm
5818
5819     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5820         :
5821     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5822         :
5823     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5824         case "${cross_prefix:-$cc}" in
5825             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5826             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5827 __asm__ (".eabi_attribute 28, 1");
5828 int main(void) { return 0; }
5829 EOF
5830         esac
5831         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5832     fi
5833
5834     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5835     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5836     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5837     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5838     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5839     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5840     enabled setend  && check_insn setend  'setend be'
5841
5842     [ $target_os = linux ] || [ $target_os = android ] ||
5843         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5844             $ARCH_EXT_LIST_ARM
5845
5846     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5847
5848     check_as as_arch_directive ".arch armv7-a"
5849     check_as as_dn_directive   "ra .dn d0.i16"
5850     check_as as_fpu_directive  ".fpu neon"
5851
5852     # llvm's integrated assembler supports .object_arch from llvm 3.5
5853     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5854         check_as as_object_arch ".object_arch armv4"
5855
5856     # MS armasm fails to assemble our PIC constructs
5857     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5858
5859 elif enabled mips; then
5860
5861     # Check toolchain ISA level
5862     if enabled mips64; then
5863         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5864             disable mips64r2
5865
5866         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5867
5868         disable mips32r6 && disable mips32r5 && disable mips32r2
5869     else
5870         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5871             disable mips32r5 && disable mips32r2
5872
5873         enabled mips32r5 && check_inline_asm mips32r5 '"eretnc"'
5874         enabled mips32r2 && check_inline_asm mips32r2 '"ext $0, $0, 0, 1"'
5875
5876         disable mips64r6 && disable mips64r5 && disable mips64r2
5877     fi
5878
5879     enabled mipsfpu && check_inline_asm mipsfpu '"cvt.d.l $f0, $f2"'
5880     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5881
5882     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5883     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5884
5885     # MSA and MSA2 can be detected at runtime so we supply extra flags here
5886     enabled mipsfpu && enabled msa && check_inline_asm msa '"addvi.b $w0, $w1, 1"' '-mmsa' && append MSAFLAGS '-mmsa'
5887     enabled msa && enabled msa2 && check_inline_asm msa2 '"nxbits.any.b $w0, $w0"' '-mmsa2' && append MSAFLAGS '-mmsa2'
5888
5889     # loongson2 have no switch cflag so we can only probe toolchain ability
5890     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"' && disable loongson3
5891
5892     # loongson3 is paired with MMI
5893     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
5894
5895     # MMI can be detected at runtime too
5896     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
5897
5898     if enabled bigendian && enabled msa; then
5899         disable msa
5900     fi
5901
5902 elif enabled parisc; then
5903
5904     if enabled gcc; then
5905         case $($cc -dumpversion) in
5906             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5907         esac
5908     fi
5909
5910 elif enabled ppc; then
5911
5912     enable local_aligned
5913
5914     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5915     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5916     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5917     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5918
5919     if enabled altivec; then
5920         check_cflags -maltivec -mabi=altivec
5921
5922         # check if our compiler supports Motorola AltiVec C API
5923         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5924                                     vector signed int v2 = (vector signed int) { 1 };
5925                                     v1 = vec_add(v1, v2);"
5926
5927         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5928     fi
5929
5930     if enabled vsx; then
5931         check_cflags -mvsx &&
5932         check_cc vsx altivec.h "int v[4] = { 0 };
5933                                 vector signed int v1 = vec_vsx_ld(0, v);"
5934     fi
5935
5936     if enabled power8; then
5937         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5938     fi
5939
5940 elif enabled x86; then
5941
5942     check_builtin rdtsc    intrin.h   "__rdtsc()"
5943     check_builtin mm_empty mmintrin.h "_mm_empty()"
5944
5945     enable local_aligned
5946
5947     # check whether EBP is available on x86
5948     # As 'i' is stored on the stack, this program will crash
5949     # if the base pointer is used to access it because the
5950     # base pointer is cleared in the inline assembly code.
5951     check_exec_crash <<EOF && enable ebp_available
5952 volatile int i=0;
5953 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5954 return i;
5955 EOF
5956
5957     # check whether EBX is available on x86
5958     check_inline_asm ebx_available '""::"b"(0)' &&
5959         check_inline_asm ebx_available '"":::"%ebx"'
5960
5961     # check whether xmm clobbers are supported
5962     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5963
5964     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5965         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5966
5967     # check whether binutils is new enough to compile SSSE3/MMXEXT
5968     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5969     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5970
5971     probe_x86asm(){
5972         x86asmexe_probe=$1
5973         if test_cmd $x86asmexe_probe -v; then
5974             x86asmexe=$x86asmexe_probe
5975             x86asm_type=nasm
5976             x86asm_debug="-g -F dwarf"
5977             X86ASMDEP=
5978             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5979         elif test_cmd $x86asmexe_probe --version; then
5980             x86asmexe=$x86asmexe_probe
5981             x86asm_type=yasm
5982             x86asm_debug="-g dwarf2"
5983             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5984             X86ASM_DEPFLAGS=
5985         fi
5986         check_x86asm x86asm "movbe ecx, [5]"
5987     }
5988
5989     if ! disabled_any asm mmx x86asm; then
5990         disable x86asm
5991         for program in $x86asmexe nasm yasm; do
5992             probe_x86asm $program && break
5993         done
5994         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5995         X86ASMFLAGS="-f $objformat"
5996         enabled pic               && append X86ASMFLAGS "-DPIC"
5997         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5998         case "$objformat" in
5999             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
6000         esac
6001
6002         enabled avx512 && check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
6003         enabled avx2   && check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
6004         enabled xop    && check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
6005         enabled fma4   && check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
6006         check_x86asm cpunop          "CPU amdnop"
6007     fi
6008
6009     case "$cpu" in
6010         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
6011             disable fast_clz
6012         ;;
6013     esac
6014
6015 fi
6016
6017 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
6018
6019 check_ldflags -Wl,--as-needed
6020 check_ldflags -Wl,-z,noexecstack
6021
6022 if ! disabled network; then
6023     check_func getaddrinfo $network_extralibs
6024     check_func inet_aton $network_extralibs
6025
6026     check_type netdb.h "struct addrinfo"
6027     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
6028     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
6029     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
6030     check_type poll.h "struct pollfd"
6031     check_type netinet/sctp.h "struct sctp_event_subscribe"
6032     check_struct "sys/socket.h" "struct msghdr" msg_flags
6033     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
6034     check_type netinet/in.h "struct sockaddr_in6"
6035     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
6036     check_type "sys/types.h sys/socket.h" socklen_t
6037
6038     # Prefer arpa/inet.h over winsock2
6039     if check_headers arpa/inet.h ; then
6040         check_func closesocket
6041     elif check_headers winsock2.h ; then
6042         check_func_headers winsock2.h closesocket -lws2 &&
6043             network_extralibs="-lws2" ||
6044         { check_func_headers winsock2.h closesocket -lws2_32 &&
6045             network_extralibs="-lws2_32"; } || disable winsock2_h network
6046         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
6047
6048         check_type ws2tcpip.h socklen_t
6049         check_type ws2tcpip.h "struct addrinfo"
6050         check_type ws2tcpip.h "struct group_source_req"
6051         check_type ws2tcpip.h "struct ip_mreq_source"
6052         check_type ws2tcpip.h "struct ipv6_mreq"
6053         check_type winsock2.h "struct pollfd"
6054         check_struct winsock2.h "struct sockaddr" sa_len
6055         check_type ws2tcpip.h "struct sockaddr_in6"
6056         check_type ws2tcpip.h "struct sockaddr_storage"
6057     else
6058         disable network
6059     fi
6060 fi
6061
6062 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
6063 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
6064 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
6065 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
6066 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
6067 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
6068 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
6069
6070 case "$custom_allocator" in
6071     jemalloc)
6072         # jemalloc by default does not use a prefix
6073         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
6074     ;;
6075     tcmalloc)
6076         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
6077         malloc_prefix=tc_
6078     ;;
6079 esac
6080
6081 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
6082 check_func  ${malloc_prefix}memalign            && enable memalign
6083 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
6084
6085 check_func  access
6086 check_func_headers stdlib.h arc4random
6087 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
6088 check_func  fcntl
6089 check_func  fork
6090 check_func  gethrtime
6091 check_func  getopt
6092 check_func  getrusage
6093 check_func  gettimeofday
6094 check_func  isatty
6095 check_func  mkstemp
6096 check_func  mmap
6097 check_func  mprotect
6098 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
6099 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
6100 check_func  sched_getaffinity
6101 check_func  setrlimit
6102 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
6103 check_func  strerror_r
6104 check_func  sysconf
6105 check_func  sysctl
6106 check_func  usleep
6107
6108 check_func_headers conio.h kbhit
6109 check_func_headers io.h setmode
6110 check_func_headers lzo/lzo1x.h lzo1x_999_compress
6111 check_func_headers mach/mach_time.h mach_absolute_time
6112 check_func_headers stdlib.h getenv
6113 check_func_headers sys/stat.h lstat
6114
6115 check_func_headers windows.h GetModuleHandle
6116 check_func_headers windows.h GetProcessAffinityMask
6117 check_func_headers windows.h GetProcessTimes
6118 check_func_headers windows.h GetStdHandle
6119 check_func_headers windows.h GetSystemTimeAsFileTime
6120 check_func_headers windows.h LoadLibrary
6121 check_func_headers windows.h MapViewOfFile
6122 check_func_headers windows.h PeekNamedPipe
6123 check_func_headers windows.h SetConsoleTextAttribute
6124 check_func_headers windows.h SetConsoleCtrlHandler
6125 check_func_headers windows.h SetDllDirectory
6126 check_func_headers windows.h Sleep
6127 check_func_headers windows.h VirtualAlloc
6128 check_func_headers glob.h glob
6129 enabled xlib &&
6130     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
6131
6132 check_headers direct.h
6133 check_headers dirent.h
6134 check_headers dxgidebug.h
6135 check_headers dxva.h
6136 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
6137 check_headers io.h
6138 check_headers linux/perf_event.h
6139 check_headers libcrystalhd/libcrystalhd_if.h
6140 check_headers malloc.h
6141 check_headers mftransform.h
6142 check_headers net/udplite.h
6143 check_headers poll.h
6144 check_headers sys/param.h
6145 check_headers sys/resource.h
6146 check_headers sys/select.h
6147 check_headers sys/time.h
6148 check_headers sys/un.h
6149 check_headers termios.h
6150 check_headers unistd.h
6151 check_headers valgrind/valgrind.h
6152 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
6153 check_headers windows.h
6154 check_headers X11/extensions/XvMClib.h
6155 check_headers asm/types.h
6156
6157 # it seems there are versions of clang in some distros that try to use the
6158 # gcc headers, which explodes for stdatomic
6159 # so we also check that atomics actually work here
6160 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
6161
6162 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
6163 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
6164     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
6165 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
6166 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
6167 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
6168
6169 check_lib android android/native_window.h ANativeWindow_acquire -landroid
6170 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
6171 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
6172
6173 enabled appkit       && check_apple_framework AppKit
6174 enabled audiotoolbox && check_apple_framework AudioToolbox
6175 enabled avfoundation && check_apple_framework AVFoundation
6176 enabled coreimage    && check_apple_framework CoreImage
6177 enabled videotoolbox && check_apple_framework VideoToolbox
6178
6179 check_apple_framework CoreFoundation
6180 check_apple_framework CoreMedia
6181 check_apple_framework CoreVideo
6182 check_apple_framework CoreAudio
6183
6184 enabled avfoundation && {
6185     disable coregraphics applicationservices
6186     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6187     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6188
6189 enabled videotoolbox && {
6190     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6191     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6192     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6193     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ "-framework CoreVideo"
6194     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_ITU_R_2100_HLG "-framework CoreVideo"
6195     check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_Linear "-framework CoreVideo"
6196 }
6197
6198 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6199
6200 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6201 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6202 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6203 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6204 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6205 check_func_headers mfapi.h MFCreateAlignedMemoryBuffer -lmfplat
6206
6207 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6208 check_type "vdpau/vdpau.h" "VdpPictureInfoVP9"
6209
6210 if [ -z "$nvccflags" ]; then
6211     nvccflags=$nvccflags_default
6212 fi
6213
6214 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6215     nvccflags="$nvccflags -m64"
6216 else
6217     nvccflags="$nvccflags -m32"
6218 fi
6219
6220 if enabled cuda_nvcc; then
6221     nvccflags="$nvccflags -ptx"
6222 else
6223     nvccflags="$nvccflags -S -nocudalib -nocudainc --cuda-device-only -include ${source_link}/compat/cuda/cuda_runtime.h"
6224     check_nvcc cuda_llvm
6225 fi
6226
6227 if ! disabled ffnvcodec; then
6228     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6229     check_pkg_config ffnvcodec "ffnvcodec >= 9.1.23.1" "$ffnv_hdr_list" "" || \
6230       check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.3 ffnvcodec < 9.1" "$ffnv_hdr_list" "" || \
6231       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.10 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6232       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.11 ffnvcodec < 8.2" "$ffnv_hdr_list" ""
6233 fi
6234
6235 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6236
6237 if ! disabled w32threads && ! enabled pthreads; then
6238     check_func_headers "windows.h process.h" _beginthreadex &&
6239         check_type "windows.h" CONDITION_VARIABLE &&
6240         check_type "windows.h" INIT_ONCE &&
6241         enable w32threads || disable w32threads
6242     if ! enabled w32threads && enabled winrt; then
6243         check_func_headers "windows.h" CreateThread &&
6244             enable w32threads || disable w32threads
6245     fi
6246 fi
6247
6248 # check for some common methods of building with pthread support
6249 # do this before the optional library checks as some of them require pthreads
6250 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6251     if check_lib pthreads pthread.h pthread_join   -pthread &&
6252        check_lib pthreads pthread.h pthread_create -pthread; then
6253         add_cflags -pthread
6254     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6255          check_lib pthreads pthread.h pthread_create -pthreads; then
6256         add_cflags -pthreads
6257     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6258          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6259         add_cflags -ldl -pthread
6260     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6261          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6262         :
6263     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6264          check_lib pthreads pthread.h pthread_create -lpthread; then
6265         :
6266     elif check_func pthread_join && check_func pthread_create; then
6267         enable pthreads
6268     fi
6269     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6270
6271     if enabled pthreads; then
6272         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6273         check_func pthread_cancel $pthreads_extralibs
6274     fi
6275 fi
6276
6277 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6278                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6279 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6280 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6281
6282 # On some systems dynamic loading requires no extra linker flags
6283 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6284
6285 check_lib libm math.h sin -lm
6286
6287 atan2f_args=2
6288 copysign_args=2
6289 hypot_args=2
6290 ldexpf_args=2
6291 powf_args=2
6292
6293 for func in $MATH_FUNCS; do
6294     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6295 done
6296
6297 for func in $COMPLEX_FUNCS; do
6298     eval check_complexfunc $func \${${func}_args:-1}
6299 done
6300
6301 # these are off by default, so fail if requested and not available
6302 enabled avisynth          && require_headers "avisynth/avisynth_c.h"
6303 enabled cuda_nvcc         && { check_nvcc cuda_nvcc || die "ERROR: failed checking for nvcc."; }
6304 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6305 enabled decklink          && { require_headers DeckLinkAPI.h &&
6306                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a0a0000" || die "ERROR: Decklink API version must be >= 10.10"; } }
6307 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6308 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6309 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6310 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6311 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6312 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6313 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6314                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6315                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6316 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6317 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6318 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6319 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6320 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6321 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6322                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6323                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6324 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6325 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6326 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d/dav1d.h" dav1d_version
6327 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6328 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6329 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6330 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6331                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6332                                  warn "using libfdk without pkg-config"; } }
6333 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
6334 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6335 enabled fontconfig        && enable libfontconfig
6336 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6337 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6338 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6339 enabled libglslang        && require_cpp libglslang glslang/SPIRV/GlslangToSpv.h "glslang::TIntermediate*" -lglslang -lMachineIndependent -lOSDependent -lHLSL -lOGLCompiler -lGenericCodeGen -lSPVRemapper -lSPIRV -lSPIRV-Tools-opt -lSPIRV-Tools -lpthread -lstdc++
6340 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6341                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6342 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6343                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6344                                done || die "ERROR: libgsm not found"; }
6345 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6346 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6347 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6348 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6349 # While it may appear that require is being used as a pkg-config
6350 # fallback for libmfx, it is actually being used to detect a different
6351 # installation route altogether.  If libmfx is installed via the Intel
6352 # Media SDK or Intel Media Server Studio, these don't come with
6353 # pkg-config support.  Instead, users should make sure that the build
6354 # can find the libraries and headers through other means.
6355 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6356                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6357 if enabled libmfx; then
6358    check_cc MFX_CODEC_VP9 "mfx/mfxvp9.h mfx/mfxstructures.h" "MFX_CODEC_VP9"
6359 fi
6360
6361 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6362 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6363 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine ||
6364                                require libmysofa mysofa.h mysofa_neighborhood_init_withstepdefine -lmysofa $zlib_extralibs; }
6365 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6366                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6367                                die "ERROR: libnpp not found"; }
6368 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6369 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6370 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6371                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6372                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6373                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6374 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6375 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6376                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6377 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6378 enabled libopenvino       && require libopenvino c_api/ie_c_api.h ie_c_api_version -linference_engine_c_api
6379 enabled libopus           && {
6380     enabled libopus_decoder && {
6381         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6382     }
6383     enabled libopus_encoder && {
6384         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6385     }
6386 }
6387 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6388 enabled librabbitmq       && require_pkg_config librabbitmq "librabbitmq >= 0.7.1" amqp.h amqp_new_connection
6389 enabled librav1e          && require_pkg_config librav1e "rav1e >= 0.1.0" rav1e.h rav1e_context_new
6390 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6391 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6392 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6393 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6394 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6395                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6396 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6397 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6398 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6399 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6400 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6401 enabled libsvtav1         && require_pkg_config libsvtav1 "SvtAv1Enc >= 0.8.4" EbSvtAv1Enc.h svt_av1_enc_init_handle
6402 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6403 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6404 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6405 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6406 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6407                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6408                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6409 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6410 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6411 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.5.2" libvmaf.h compute_vmaf
6412 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6413 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6414                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6415
6416 enabled libvpx            && {
6417     enabled libvpx_vp8_decoder && {
6418         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6419             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6420     }
6421     enabled libvpx_vp8_encoder && {
6422         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6423             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6424     }
6425     enabled libvpx_vp9_decoder && {
6426         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6427             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6428     }
6429     enabled libvpx_vp9_encoder && {
6430         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6431             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6432     }
6433     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6434         die "libvpx enabled but no supported decoders found"
6435     fi
6436 }
6437
6438 enabled libwebp           && {
6439     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6440     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6441 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6442                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6443                                  warn "using libx264 without pkg-config"; } } &&
6444                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6445                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6446 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6447                              require_cpp_condition libx265 x265.h "X265_BUILD >= 70"
6448 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6449 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6450 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6451 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6452 enabled libzmq            && require_pkg_config libzmq "libzmq >= 4.2.1" zmq.h zmq_ctx_new
6453 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6454                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6455                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6456 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6457 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6458                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6459                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6460                                die "ERROR: mbedTLS not found"; }
6461 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6462 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6463                                { ! enabled cross_compile &&
6464                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6465                                  add_ldflags -L/opt/vc/lib/ &&
6466                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6467                                die "ERROR: mmal not found" &&
6468                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6469 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6470                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6471                                die "ERROR: openal not found"; } &&
6472                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6473                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6474 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6475                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6476                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6477                                die "ERROR: opencl not found"; } &&
6478                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6479                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6480                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6481 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6482                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6483                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6484                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6485                                die "ERROR: opengl not found."
6486                              }
6487 enabled omx_rpi           && { test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame ||
6488                                { ! enabled cross_compile &&
6489                                  add_cflags -isystem/opt/vc/include/IL &&
6490                                  test_code cc OMX_Core.h OMX_IndexConfigBrcmVideoRequestIFrame; } ||
6491                                die "ERROR: OpenMAX IL headers from raspberrypi/firmware not found"; } &&
6492                              enable omx
6493 enabled omx               && require_headers OMX_Core.h
6494 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6495                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6496                                check_lib openssl openssl/ssl.h OPENSSL_init_ssl -lssl -lcrypto ||
6497                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6498                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6499                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6500                                die "ERROR: openssl not found"; }
6501 enabled pocketsphinx      && require_pkg_config pocketsphinx pocketsphinx pocketsphinx/pocketsphinx.h ps_init
6502 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6503                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6504                                { enabled libdrm ||
6505                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6506                              }
6507 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6508
6509
6510 if enabled gcrypt; then
6511     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6512     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6513         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6514         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6515         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6516             die "ERROR: gcrypt not found"
6517         add_cflags $gcrypt_cflags
6518     else
6519         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6520     fi
6521 fi
6522
6523 if enabled sdl2; then
6524     SDL2_CONFIG="${cross_prefix}sdl2-config"
6525     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6526     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6527         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6528         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6529         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6530         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6531         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6532             enable sdl2
6533     fi
6534     if test $target_os = "mingw32"; then
6535         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6536     fi
6537 fi
6538
6539 if enabled decklink; then
6540     case $target_os in
6541         mingw32*|mingw64*|win32|win64)
6542             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6543             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6544             ;;
6545     esac
6546 fi
6547
6548 enabled securetransport &&
6549     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6550     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6551         disable securetransport
6552
6553 enabled securetransport &&
6554     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6555
6556 enabled schannel &&
6557     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6558     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6559     schannel_extralibs="-lsecur32" ||
6560         disable schannel
6561
6562 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6563 enabled makeinfo \
6564     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6565     && enable makeinfo_html || disable makeinfo_html
6566 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6567 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6568 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6569 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6570
6571 # check V4L2 codecs available in the API
6572 if enabled v4l2_m2m; then
6573     check_headers linux/fb.h
6574     check_headers linux/videodev2.h
6575     test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6576     check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6577     check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6578     check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6579     check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6580     check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6581     check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6582     check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6583     check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6584     check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6585     check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6586 fi
6587
6588 check_headers sys/videoio.h
6589 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6590
6591 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6592 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6593 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6594 # w32api 3.12 had it defined wrong
6595 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6596
6597 check_type "dshow.h" IBaseFilter
6598
6599 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6600 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6601     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6602     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6603     check_headers "dev/ic/bt8xx.h"
6604
6605 if check_struct sys/soundcard.h audio_buf_info bytes; then
6606     enable_sanitized sys/soundcard.h
6607 else
6608     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6609     #include <sys/soundcard.h>
6610     audio_buf_info abc;
6611 EOF
6612 fi
6613
6614 enabled alsa && { check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6615                   check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound; }
6616
6617 enabled libjack &&
6618     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6619
6620 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6621
6622 if enabled libcdio; then
6623     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6624     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6625     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6626     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6627     die "ERROR: No usable libcdio/cdparanoia found"
6628 fi
6629
6630 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6631     disable libxcb_shm libxcb_shape libxcb_xfixes
6632
6633 if enabled libxcb; then
6634     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6635     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6636     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6637 fi
6638
6639 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6640
6641 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6642 # the desktop api partition
6643 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6644 #ifdef WINAPI_FAMILY
6645 #include <winapifamily.h>
6646 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6647 #error desktop, not uwp
6648 #else
6649 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6650 #endif
6651 #else
6652 #error no family set
6653 #endif
6654 EOF
6655
6656 enabled libdrm &&
6657     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h" drmModeGetFB2
6658
6659 enabled vaapi &&
6660     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6661
6662 if enabled vaapi; then
6663     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6664
6665     if enabled xlib; then
6666         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6667     fi
6668
6669     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6670
6671     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6672     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6673     check_type   "va/va.h va/va_vpp.h" "VAProcFilterParameterBufferHDRToneMapping"
6674     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6675     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6676     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6677     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6678     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6679 fi
6680
6681 if enabled_all opencl libdrm ; then
6682     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6683         enable opencl_drm_beignet
6684     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6685         enable opencl_drm_arm
6686 fi
6687
6688 if enabled_all opencl vaapi ; then
6689     if enabled opencl_drm_beignet ; then
6690         enable opencl_vaapi_beignet
6691     else
6692         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6693             enable opencl_vaapi_intel_media
6694     fi
6695 fi
6696
6697 if enabled_all opencl dxva2 ; then
6698     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6699         enable opencl_dxva2
6700 fi
6701
6702 if enabled_all opencl d3d11va ; then
6703     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6704         enable opencl_d3d11
6705 fi
6706
6707 enabled vdpau &&
6708     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6709
6710 enabled vdpau &&
6711     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6712
6713 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6714
6715 enabled vulkan &&
6716     require_pkg_config vulkan "vulkan >= 1.1.97" "vulkan/vulkan.h" vkCreateInstance
6717
6718 if enabled x86; then
6719     case $target_os in
6720         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6721             ;;
6722         *)
6723             disable ffnvcodec cuvid nvdec nvenc
6724             ;;
6725     esac
6726 elif enabled_any aarch64 ppc64 && ! enabled bigendian; then
6727     case $target_os in
6728         linux)
6729             ;;
6730         *)
6731             disable ffnvcodec cuvid nvdec nvenc
6732             ;;
6733     esac
6734 else
6735     disable ffnvcodec cuvid nvdec nvenc
6736 fi
6737
6738 enabled ffnvcodec && enable cuda
6739
6740 enabled nvenc &&
6741     test_cc -I$source_path <<EOF || disable nvenc
6742 #include <ffnvcodec/nvEncodeAPI.h>
6743 NV_ENCODE_API_FUNCTION_LIST flist;
6744 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6745 int main(void) { return 0; }
6746 EOF
6747
6748 enabled amf &&
6749     check_cpp_condition amf "AMF/core/Version.h" \
6750         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400090000"
6751
6752 # Funny iconv installations are not unusual, so check it after all flags have been set
6753 if enabled libc_iconv; then
6754     check_func_headers iconv.h iconv
6755 elif enabled iconv; then
6756     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6757 fi
6758
6759 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6760
6761 # add some useful compiler flags if supported
6762 check_cflags -Wdeclaration-after-statement
6763 check_cflags -Wall
6764 check_cflags -Wdisabled-optimization
6765 check_cflags -Wpointer-arith
6766 check_cflags -Wredundant-decls
6767 check_cflags -Wwrite-strings
6768 check_cflags -Wtype-limits
6769 check_cflags -Wundef
6770 check_cflags -Wmissing-prototypes
6771 check_cflags -Wno-pointer-to-int-cast
6772 check_cflags -Wstrict-prototypes
6773 check_cflags -Wempty-body
6774
6775 if enabled extra_warnings; then
6776     check_cflags -Wcast-qual
6777     check_cflags -Wextra
6778     check_cflags -Wpedantic
6779 fi
6780
6781 check_disable_warning(){
6782     warning_flag=-W${1#-Wno-}
6783     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6784 }
6785
6786 test_cflags -Werror=unused-command-line-argument &&
6787     append unknown_warning_flags "-Werror=unused-command-line-argument"
6788 test_cflags -Werror=unknown-warning-option &&
6789     append unknown_warning_flags "-Werror=unknown-warning-option"
6790
6791 check_disable_warning -Wno-parentheses
6792 check_disable_warning -Wno-switch
6793 check_disable_warning -Wno-format-zero-length
6794 check_disable_warning -Wno-pointer-sign
6795 check_disable_warning -Wno-unused-const-variable
6796 check_disable_warning -Wno-bool-operation
6797 check_disable_warning -Wno-char-subscripts
6798
6799 check_disable_warning_headers(){
6800     warning_flag=-W${1#-Wno-}
6801     test_cflags $warning_flag && add_cflags_headers $1
6802 }
6803
6804 check_disable_warning_headers -Wno-deprecated-declarations
6805 check_disable_warning_headers -Wno-unused-variable
6806
6807 test_cc <<EOF && enable blocks_extension
6808 void (^block)(void);
6809 EOF
6810
6811 # add some linker flags
6812 check_ldflags -Wl,--warn-common
6813 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6814 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6815 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6816
6817 # add some strip flags
6818 check_stripflags -x
6819
6820 enabled neon_clobber_test &&
6821     check_ldflags -Wl,--wrap,avcodec_open2              \
6822                   -Wl,--wrap,avcodec_decode_audio4      \
6823                   -Wl,--wrap,avcodec_decode_video2      \
6824                   -Wl,--wrap,avcodec_decode_subtitle2   \
6825                   -Wl,--wrap,avcodec_encode_audio2      \
6826                   -Wl,--wrap,avcodec_encode_video2      \
6827                   -Wl,--wrap,avcodec_encode_subtitle    \
6828                   -Wl,--wrap,avcodec_send_packet        \
6829                   -Wl,--wrap,avcodec_receive_packet     \
6830                   -Wl,--wrap,avcodec_send_frame         \
6831                   -Wl,--wrap,avcodec_receive_frame      \
6832                   -Wl,--wrap,swr_convert                \
6833                   -Wl,--wrap,avresample_convert ||
6834     disable neon_clobber_test
6835
6836 enabled xmm_clobber_test &&
6837     check_ldflags -Wl,--wrap,avcodec_open2              \
6838                   -Wl,--wrap,avcodec_decode_audio4      \
6839                   -Wl,--wrap,avcodec_decode_video2      \
6840                   -Wl,--wrap,avcodec_decode_subtitle2   \
6841                   -Wl,--wrap,avcodec_encode_audio2      \
6842                   -Wl,--wrap,avcodec_encode_video2      \
6843                   -Wl,--wrap,avcodec_encode_subtitle    \
6844                   -Wl,--wrap,avcodec_send_packet        \
6845                   -Wl,--wrap,avcodec_receive_packet     \
6846                   -Wl,--wrap,avcodec_send_frame         \
6847                   -Wl,--wrap,avcodec_receive_frame      \
6848                   -Wl,--wrap,swr_convert                \
6849                   -Wl,--wrap,avresample_convert         \
6850                   -Wl,--wrap,sws_scale ||
6851     disable xmm_clobber_test
6852
6853 check_ld "cc" proper_dce <<EOF
6854 extern const int array[512];
6855 static inline int func(void) { return array[0]; }
6856 int main(void) { return 0; }
6857 EOF
6858
6859 if enabled proper_dce; then
6860     echo "X { local: *; };" > $TMPV
6861     if test_ldflags -Wl,${version_script},$TMPV; then
6862         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6863         quotes='""'
6864         test_cc <<EOF && enable symver_asm_label
6865 void ff_foo(void) __asm__ ("av_foo@VERSION");
6866 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6867 EOF
6868         test_cc <<EOF && enable symver_gnu_asm
6869 __asm__(".symver ff_foo,av_foo@VERSION");
6870 void ff_foo(void) {}
6871 EOF
6872     fi
6873 fi
6874
6875 if [ -z "$optflags" ]; then
6876     if enabled small; then
6877         optflags=$cflags_size
6878     elif enabled optimizations; then
6879         optflags=$cflags_speed
6880     else
6881         optflags=$cflags_noopt
6882     fi
6883 fi
6884
6885 check_optflags(){
6886     check_cflags "$@"
6887     enabled lto && check_ldflags "$@"
6888 }
6889
6890 check_optflags $optflags
6891 check_optflags -fno-math-errno
6892 check_optflags -fno-signed-zeros
6893
6894 if enabled lto; then
6895     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6896     check_cflags  -flto
6897     check_ldflags -flto $cpuflags
6898     disable inline_asm_direct_symbol_refs
6899 fi
6900
6901 enabled ftrapv && check_cflags -ftrapv
6902
6903 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6904 int x;
6905 EOF
6906
6907
6908 if enabled icc; then
6909     # Just warnings, no remarks
6910     check_cflags -w1
6911     # -wd: Disable following warnings
6912     # 144, 167, 556: -Wno-pointer-sign
6913     # 188: enumerated type mixed with another type
6914     # 1292: attribute "foo" ignored
6915     # 1419: external declaration in primary source file
6916     # 10006: ignoring unknown option -fno-signed-zeros
6917     # 10148: ignoring unknown option -Wno-parentheses
6918     # 10156: ignoring option '-W'; no argument required
6919     # 13200: No EMMS instruction before call to function
6920     # 13203: No EMMS instruction before return from function
6921     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6922     # 11030: Warning unknown option --as-needed
6923     # 10156: ignoring option '-export'; no argument required
6924     check_ldflags -wd10156,11030
6925     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6926     enable ebp_available
6927     # The test above does not test linking
6928     enabled lto && disable symver_asm_label
6929     if enabled x86_32; then
6930         icc_version=$($cc -dumpversion)
6931         test ${icc_version%%.*} -ge 11 &&
6932             check_cflags -falign-stack=maintain-16-byte ||
6933             disable aligned_stack
6934     fi
6935 elif enabled gcc; then
6936     check_optflags -fno-tree-vectorize
6937     check_cflags -Werror=format-security
6938     check_cflags -Werror=implicit-function-declaration
6939     check_cflags -Werror=missing-prototypes
6940     check_cflags -Werror=return-type
6941     check_cflags -Werror=vla
6942     check_cflags -Wformat
6943     check_cflags -fdiagnostics-color=auto
6944     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6945     if enabled x86_32; then
6946         case $target_os in
6947         *bsd*)
6948             # BSDs don't guarantee a 16 byte aligned stack, but we can
6949             # request GCC to try to maintain 16 byte alignment throughout
6950             # function calls. Library entry points that might call assembly
6951             # functions align the stack. (The parameter means 2^4 bytes.)
6952             check_cflags -mpreferred-stack-boundary=4
6953             ;;
6954         esac
6955     fi
6956 elif enabled llvm_gcc; then
6957     check_cflags -mllvm -stack-alignment=16
6958 elif enabled clang; then
6959     if enabled x86_32; then
6960         # Clang doesn't support maintaining alignment without assuming the
6961         # same alignment in every function. If 16 byte alignment would be
6962         # enabled, one would also have to either add attribute_align_arg on
6963         # every single entry point into the libraries or enable -mstackrealign
6964         # (doing stack realignment in every single function).
6965         case $target_os in
6966         mingw32|win32|*bsd*)
6967             disable aligned_stack
6968             ;;
6969         *)
6970             check_cflags -mllvm -stack-alignment=16
6971             check_cflags -mstack-alignment=16
6972             ;;
6973         esac
6974     else
6975         check_cflags -mllvm -stack-alignment=16
6976         check_cflags -mstack-alignment=16
6977     fi
6978     check_cflags -Qunused-arguments
6979     check_cflags -Werror=implicit-function-declaration
6980     check_cflags -Werror=missing-prototypes
6981     check_cflags -Werror=return-type
6982 elif enabled cparser; then
6983     add_cflags -Wno-missing-variable-declarations
6984     add_cflags -Wno-empty-statement
6985 elif enabled armcc; then
6986     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6987     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6988     # 2523: use of inline assembly is deprecated
6989     add_cflags -W${armcc_opt},--diag_suppress=2523
6990     add_cflags -W${armcc_opt},--diag_suppress=1207
6991     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6992     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6993     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6994     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6995 elif enabled pathscale; then
6996     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6997     disable inline_asm
6998 elif enabled_any msvc icl; then
6999     enabled x86_32 && disable aligned_stack
7000     enabled_all x86_32 debug && add_cflags -Oy-
7001     enabled debug && add_ldflags -debug
7002     enable pragma_deprecated
7003     if enabled icl; then
7004         # -Qansi-alias is basically -fstrict-aliasing, but does not work
7005         # (correctly) on icl 13.x.
7006         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
7007             add_cflags -Qansi-alias
7008         # Some inline asm is not compilable in debug
7009         if enabled debug; then
7010             disable ebp_available
7011             disable ebx_available
7012         fi
7013     fi
7014     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
7015     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
7016     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
7017     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
7018     # (as it ends up if the restrict redefine is done before including stdlib.h), while
7019     # MSVC 2013 and newer can handle it fine.
7020     # If this declspec fails, force including stdlib.h before the restrict redefinition
7021     # happens in config.h.
7022     if [ $restrict_keyword != restrict ]; then
7023         test_cc <<EOF || add_cflags -FIstdlib.h
7024 __declspec($restrict_keyword) void *foo(int);
7025 EOF
7026     fi
7027     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
7028     # Issue has been fixed in MSVC v19.00.24218.
7029     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
7030         check_cflags -d2SSAOptimizer-
7031     # enable utf-8 source processing on VS2015 U2 and newer
7032     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
7033         add_cflags -utf-8
7034 fi
7035
7036 for pfx in "" host_; do
7037     varname=${pfx%_}cc_type
7038     eval "type=\$$varname"
7039     if [ "$type" = "msvc" ]; then
7040         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
7041 static inline int foo(int a) { return a; }
7042 EOF
7043     fi
7044 done
7045
7046 case $as_type in
7047     clang)
7048         add_asflags -Qunused-arguments
7049     ;;
7050 esac
7051
7052 case $ld_type in
7053     clang)
7054         check_ldflags -Qunused-arguments
7055     ;;
7056 esac
7057
7058 enable frame_thread_encoder
7059
7060 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
7061
7062 check_deps $CONFIG_LIST       \
7063            $CONFIG_EXTRA      \
7064            $HAVE_LIST         \
7065            $ALL_COMPONENTS    \
7066
7067 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
7068 enabled avresample && warn "Building with deprecated library libavresample"
7069
7070 case $target_os in
7071 haiku)
7072     disable memalign
7073     disable posix_memalign
7074     ;;
7075 *-dos|freedos|opendos)
7076     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
7077         disable memalign
7078     fi
7079     ;;
7080 esac
7081
7082 flatten_extralibs(){
7083     nested_entries=
7084     list_name=$1
7085     eval list=\$${1}
7086     for entry in $list; do
7087         entry_copy=$entry
7088         resolve entry_copy
7089         flat_entries=
7090         for e in $entry_copy; do
7091             case $e in
7092                 *_extralibs) nested_entries="$nested_entries$e ";;
7093                           *) flat_entries="$flat_entries$e ";;
7094             esac
7095         done
7096         eval $entry="\$flat_entries"
7097     done
7098     append $list_name "$nested_entries"
7099
7100     resolve nested_entries
7101     if test -n "$(filter '*_extralibs' $nested_entries)"; then
7102         flatten_extralibs $list_name
7103     fi
7104 }
7105
7106 flatten_extralibs_wrapper(){
7107     list_name=$1
7108     flatten_extralibs $list_name
7109     unique $list_name
7110     resolve $list_name
7111     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
7112     eval printf \''%s'\' \""\$$list_name"\"
7113 }
7114
7115 for linkunit in $LIBRARY_LIST; do
7116     unset current_extralibs
7117     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
7118     for comp in ${components}; do
7119         enabled $comp || continue
7120         comp_extralibs="${comp}_extralibs"
7121         append current_extralibs $comp_extralibs
7122     done
7123     eval prepend ${linkunit}_extralibs $current_extralibs
7124 done
7125
7126 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7127     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
7128 done
7129
7130 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
7131
7132 for thread in $THREADS_LIST; do
7133     if enabled $thread; then
7134         test -n "$thread_type" &&
7135             die "ERROR: Only one thread type must be selected." ||
7136             thread_type="$thread"
7137     fi
7138 done
7139
7140 if disabled stdatomic; then
7141     if enabled atomics_gcc; then
7142         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
7143     elif enabled atomics_win32; then
7144         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
7145     elif enabled atomics_suncc; then
7146         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
7147     elif enabled pthreads; then
7148         add_compat atomics/pthread/stdatomic.o
7149         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
7150     else
7151         enabled threads && die "Threading is enabled, but no atomics are available"
7152         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
7153     fi
7154 fi
7155
7156 # Check if requested libraries were found.
7157 for lib in $AUTODETECT_LIBS; do
7158     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
7159 done
7160
7161 enabled zlib && add_cppflags -DZLIB_CONST
7162
7163 # conditional library dependencies, in any order
7164 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
7165 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
7166 enabled afir_filter         && prepend avfilter_deps "avcodec"
7167 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
7168 enabled aresample_filter    && prepend avfilter_deps "swresample"
7169 enabled atempo_filter       && prepend avfilter_deps "avcodec"
7170 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
7171 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
7172 enabled convolve_filter     && prepend avfilter_deps "avcodec"
7173 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
7174 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
7175 enabled elbg_filter         && prepend avfilter_deps "avcodec"
7176 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
7177 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
7178 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
7179 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
7180 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
7181 enabled pan_filter          && prepend avfilter_deps "swresample"
7182 enabled pp_filter           && prepend avfilter_deps "postproc"
7183 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
7184 enabled resample_filter && prepend avfilter_deps "avresample"
7185 enabled sab_filter          && prepend avfilter_deps "swscale"
7186 enabled scale_filter    && prepend avfilter_deps "swscale"
7187 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
7188 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
7189 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
7190 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
7191 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
7192 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
7193 enabled smartblur_filter    && prepend avfilter_deps "swscale"
7194 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
7195 enabled spp_filter          && prepend avfilter_deps "avcodec"
7196 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
7197 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
7198 enabled uspp_filter         && prepend avfilter_deps "avcodec"
7199 enabled zoompan_filter      && prepend avfilter_deps "swscale"
7200
7201 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
7202
7203 #FIXME
7204 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
7205     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
7206
7207 enabled opus_decoder    && prepend avcodec_deps "swresample"
7208
7209 # reorder the items at var $1 to align with the items order at var $2 .
7210 # die if an item at $1 is not at $2 .
7211 reorder_by(){
7212     eval rb_in=\$$1
7213     eval rb_ordered=\$$2
7214
7215     for rb in $rb_in; do
7216         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7217     done
7218
7219     rb_out=
7220     for rb in $rb_ordered; do
7221         is_in $rb $rb_in && rb_out="$rb_out$rb "
7222     done
7223     eval $1=\$rb_out
7224 }
7225
7226 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7227 # within a set of N items, N expansions are enough to expose a cycle.
7228 expand_deps(){
7229     unique ${1}_deps  # required for the early break test.
7230     for dummy in $LIBRARY_LIST; do  # N iteratios
7231         eval deps=\$${1}_deps
7232         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7233         unique ${1}_deps
7234         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7235     done
7236
7237     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7238     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7239 }
7240
7241 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7242 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7243
7244 map 'expand_deps $v' $LIBRARY_LIST
7245
7246 if test "$quiet" != "yes"; then
7247
7248 echo "install prefix            $prefix"
7249 echo "source path               $source_path"
7250 echo "C compiler                $cc"
7251 echo "C library                 $libc_type"
7252 if test "$host_cc" != "$cc"; then
7253     echo "host C compiler           $host_cc"
7254     echo "host C library            $host_libc_type"
7255 fi
7256 echo "ARCH                      $arch ($cpu)"
7257 if test "$build_suffix" != ""; then
7258     echo "build suffix              $build_suffix"
7259 fi
7260 if test "$progs_suffix" != ""; then
7261     echo "progs suffix              $progs_suffix"
7262 fi
7263 if test "$extra_version" != ""; then
7264     echo "version string suffix     $extra_version"
7265 fi
7266 echo "big-endian                ${bigendian-no}"
7267 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7268 if enabled x86; then
7269     echo "standalone assembly       ${x86asm-no}"
7270     echo "x86 assembler             ${x86asmexe}"
7271     echo "MMX enabled               ${mmx-no}"
7272     echo "MMXEXT enabled            ${mmxext-no}"
7273     echo "3DNow! enabled            ${amd3dnow-no}"
7274     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7275     echo "SSE enabled               ${sse-no}"
7276     echo "SSSE3 enabled             ${ssse3-no}"
7277     echo "AESNI enabled             ${aesni-no}"
7278     echo "AVX enabled               ${avx-no}"
7279     echo "AVX2 enabled              ${avx2-no}"
7280     echo "AVX-512 enabled           ${avx512-no}"
7281     echo "XOP enabled               ${xop-no}"
7282     echo "FMA3 enabled              ${fma3-no}"
7283     echo "FMA4 enabled              ${fma4-no}"
7284     echo "i686 features enabled     ${i686-no}"
7285     echo "CMOV is fast              ${fast_cmov-no}"
7286     echo "EBX available             ${ebx_available-no}"
7287     echo "EBP available             ${ebp_available-no}"
7288 fi
7289 if enabled aarch64; then
7290     echo "NEON enabled              ${neon-no}"
7291     echo "VFP enabled               ${vfp-no}"
7292 fi
7293 if enabled arm; then
7294     echo "ARMv5TE enabled           ${armv5te-no}"
7295     echo "ARMv6 enabled             ${armv6-no}"
7296     echo "ARMv6T2 enabled           ${armv6t2-no}"
7297     echo "VFP enabled               ${vfp-no}"
7298     echo "NEON enabled              ${neon-no}"
7299     echo "THUMB enabled             ${thumb-no}"
7300 fi
7301 if enabled mips; then
7302     echo "MIPS FPU enabled          ${mipsfpu-no}"
7303     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7304     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7305     echo "MIPS MSA enabled          ${msa-no}"
7306     echo "MIPS MSA2 enabled         ${msa2-no}"
7307     echo "LOONGSON MMI enabled      ${mmi-no}"
7308 fi
7309 if enabled ppc; then
7310     echo "AltiVec enabled           ${altivec-no}"
7311     echo "VSX enabled               ${vsx-no}"
7312     echo "POWER8 enabled            ${power8-no}"
7313     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7314     echo "dcbzl available           ${dcbzl-no}"
7315 fi
7316 echo "debug symbols             ${debug-no}"
7317 echo "strip symbols             ${stripping-no}"
7318 echo "optimize for size         ${small-no}"
7319 echo "optimizations             ${optimizations-no}"
7320 echo "static                    ${static-no}"
7321 echo "shared                    ${shared-no}"
7322 echo "postprocessing support    ${postproc-no}"
7323 echo "network support           ${network-no}"
7324 echo "threading support         ${thread_type-no}"
7325 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7326 echo "texi2html enabled         ${texi2html-no}"
7327 echo "perl enabled              ${perl-no}"
7328 echo "pod2man enabled           ${pod2man-no}"
7329 echo "makeinfo enabled          ${makeinfo-no}"
7330 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7331 test -n "$random_seed" &&
7332     echo "random seed               ${random_seed}"
7333 echo
7334
7335 echo "External libraries:"
7336 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7337 echo
7338
7339 echo "External libraries providing hardware acceleration:"
7340 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7341 echo
7342
7343 echo "Libraries:"
7344 print_enabled '' $LIBRARY_LIST | print_in_columns
7345 echo
7346
7347 echo "Programs:"
7348 print_enabled '' $PROGRAM_LIST | print_in_columns
7349 echo
7350
7351 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7352     echo "Enabled ${type}s:"
7353     eval list=\$$(toupper $type)_LIST
7354     print_enabled '_*' $list | print_in_columns
7355     echo
7356 done
7357
7358 if test -n "$ignore_tests"; then
7359     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7360     echo "Ignored FATE tests:"
7361     echo $ignore_tests | print_in_columns
7362     echo
7363 fi
7364
7365 echo "License: $license"
7366
7367 fi # test "$quiet" != "yes"
7368
7369 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7370     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7371         if disabled $cfg; then
7372             varname=${cfg}_disable_reason
7373             eval "warn \"Disabled $cfg because \$$varname\""
7374         fi
7375     done
7376 fi
7377
7378 if test -n "$WARNINGS"; then
7379     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7380     enabled fatal_warnings && exit 1
7381 fi
7382
7383 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7384
7385 esc(){
7386     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7387 }
7388
7389 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7390
7391 enabled stripping || strip="echo skipping strip"
7392 enabled stripping || striptype=""
7393
7394 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7395
7396 cat > ffbuild/config.mak <<EOF
7397 # Automatically generated by configure - do not modify!
7398 ifndef FFMPEG_CONFIG_MAK
7399 FFMPEG_CONFIG_MAK=1
7400 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7401 prefix=$prefix
7402 LIBDIR=\$(DESTDIR)$libdir
7403 SHLIBDIR=\$(DESTDIR)$shlibdir
7404 INCDIR=\$(DESTDIR)$incdir
7405 BINDIR=\$(DESTDIR)$bindir
7406 DATADIR=\$(DESTDIR)$datadir
7407 DOCDIR=\$(DESTDIR)$docdir
7408 MANDIR=\$(DESTDIR)$mandir
7409 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7410 INSTALL_NAME_DIR=$install_name_dir
7411 SRC_PATH=$source_path
7412 SRC_LINK=$source_link
7413 ifndef MAIN_MAKEFILE
7414 SRC_PATH:=\$(SRC_PATH:.%=..%)
7415 endif
7416 CC_IDENT=$cc_ident
7417 ARCH=$arch
7418 INTRINSICS=$intrinsics
7419 EXTERN_PREFIX=$extern_prefix
7420 CC=$cc
7421 CXX=$cxx
7422 AS=$as
7423 OBJCC=$objcc
7424 LD=$ld
7425 DEPCC=$dep_cc
7426 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7427 DEPAS=$as
7428 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7429 X86ASM=$x86asmexe
7430 DEPX86ASM=$x86asmexe
7431 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7432 AR=$ar
7433 ARFLAGS=$arflags
7434 AR_O=$ar_o
7435 AR_CMD=$ar
7436 NM_CMD=$nm
7437 RANLIB=$ranlib
7438 STRIP=$strip
7439 STRIPTYPE=$striptype
7440 NVCC=$nvcc
7441 CP=cp -p
7442 LN_S=$ln_s
7443 CPPFLAGS=$CPPFLAGS
7444 CFLAGS=$CFLAGS
7445 CXXFLAGS=$CXXFLAGS
7446 OBJCFLAGS=$OBJCFLAGS
7447 ASFLAGS=$ASFLAGS
7448 NVCCFLAGS=$nvccflags
7449 AS_C=$AS_C
7450 AS_O=$AS_O
7451 OBJCC_C=$OBJCC_C
7452 OBJCC_E=$OBJCC_E
7453 OBJCC_O=$OBJCC_O
7454 CC_C=$CC_C
7455 CC_E=$CC_E
7456 CC_O=$CC_O
7457 CXX_C=$CXX_C
7458 CXX_O=$CXX_O
7459 NVCC_C=$NVCC_C
7460 NVCC_O=$NVCC_O
7461 LD_O=$LD_O
7462 X86ASM_O=$X86ASM_O
7463 LD_LIB=$LD_LIB
7464 LD_PATH=$LD_PATH
7465 DLLTOOL=$dlltool
7466 WINDRES=$windres
7467 DEPWINDRES=$dep_cc
7468 DOXYGEN=$doxygen
7469 LDFLAGS=$LDFLAGS
7470 LDEXEFLAGS=$LDEXEFLAGS
7471 LDSOFLAGS=$LDSOFLAGS
7472 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7473 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7474 X86ASMFLAGS=$X86ASMFLAGS
7475 MSAFLAGS=$MSAFLAGS
7476 MMIFLAGS=$MMIFLAGS
7477 BUILDSUF=$build_suffix
7478 PROGSSUF=$progs_suffix
7479 FULLNAME=$FULLNAME
7480 LIBPREF=$LIBPREF
7481 LIBSUF=$LIBSUF
7482 LIBNAME=$LIBNAME
7483 SLIBPREF=$SLIBPREF
7484 SLIBSUF=$SLIBSUF
7485 EXESUF=$EXESUF
7486 EXTRA_VERSION=$extra_version
7487 CCDEP=$CCDEP
7488 CXXDEP=$CXXDEP
7489 CCDEP_FLAGS=$CCDEP_FLAGS
7490 ASDEP=$ASDEP
7491 ASDEP_FLAGS=$ASDEP_FLAGS
7492 X86ASMDEP=$X86ASMDEP
7493 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7494 CC_DEPFLAGS=$CC_DEPFLAGS
7495 AS_DEPFLAGS=$AS_DEPFLAGS
7496 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7497 HOSTCC=$host_cc
7498 HOSTLD=$host_ld
7499 HOSTCFLAGS=$host_cflags
7500 HOSTCPPFLAGS=$host_cppflags
7501 HOSTEXESUF=$HOSTEXESUF
7502 HOSTLDFLAGS=$host_ldflags
7503 HOSTEXTRALIBS=$host_extralibs
7504 DEPHOSTCC=$host_cc
7505 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7506 HOSTCCDEP=$HOSTCCDEP
7507 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7508 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7509 HOSTCC_C=$HOSTCC_C
7510 HOSTCC_O=$HOSTCC_O
7511 HOSTLD_O=$HOSTLD_O
7512 TARGET_EXEC=$target_exec $target_exec_args
7513 TARGET_PATH=$target_path
7514 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7515 CFLAGS-ffplay=${sdl2_cflags}
7516 CFLAGS_HEADERS=$CFLAGS_HEADERS
7517 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7518 EXTRALIBS=$extralibs
7519 COMPAT_OBJS=$compat_objs
7520 INSTALL=$install
7521 LIBTARGET=${LIBTARGET}
7522 SLIBNAME=${SLIBNAME}
7523 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7524 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7525 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7526 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7527 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7528 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7529 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7530 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7531 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7532 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7533 NOREDZONE_FLAGS=$noredzone_flags
7534 LIBFUZZER_PATH=$libfuzzer_path
7535 IGNORE_TESTS=$ignore_tests
7536 EOF
7537
7538 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7539
7540 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7541     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7542 done
7543
7544 cat > $TMPH <<EOF
7545 /* Automatically generated by configure - do not modify! */
7546 #ifndef FFMPEG_CONFIG_H
7547 #define FFMPEG_CONFIG_H
7548 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7549 #define FFMPEG_LICENSE "$(c_escape $license)"
7550 #define CONFIG_THIS_YEAR 2020
7551 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7552 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7553 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7554 #define av_restrict $restrict_keyword
7555 #define EXTERN_PREFIX "${extern_prefix}"
7556 #define EXTERN_ASM ${extern_prefix}
7557 #define BUILDSUF "$build_suffix"
7558 #define SLIBSUF "$SLIBSUF"
7559 #define HAVE_MMX2 HAVE_MMXEXT
7560 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7561 EOF
7562
7563 test -n "$assert_level" &&
7564     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7565
7566 test -n "$malloc_prefix" &&
7567     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7568
7569 if enabled x86asm; then
7570     append config_files $TMPASM
7571     cat > $TMPASM <<EOF
7572 ; Automatically generated by configure - do not modify!
7573 EOF
7574 fi
7575
7576 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7577
7578
7579 mkdir -p doc
7580 mkdir -p tests
7581 mkdir -p tests/api
7582 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7583
7584 print_config ARCH_   "$config_files" $ARCH_LIST
7585 print_config HAVE_   "$config_files" $HAVE_LIST
7586 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7587                                      $CONFIG_EXTRA      \
7588                                      $ALL_COMPONENTS    \
7589
7590 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7591 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7592
7593 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7594 cp_if_changed $TMPH config.h
7595 touch ffbuild/.config
7596
7597 enabled x86asm && cp_if_changed $TMPASM config.asm
7598
7599 cat > $TMPH <<EOF
7600 /* Generated by ffmpeg configure */
7601 #ifndef AVUTIL_AVCONFIG_H
7602 #define AVUTIL_AVCONFIG_H
7603 EOF
7604
7605 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7606
7607 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7608
7609 cp_if_changed $TMPH libavutil/avconfig.h
7610
7611 # full_filter_name_foo=vf_foo
7612 # full_filter_name_bar=asrc_bar
7613 # ...
7614 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7615
7616 # generate the lists of enabled components
7617 print_enabled_components(){
7618     file=$1
7619     struct_name=$2
7620     name=$3
7621     shift 3
7622     echo "static const $struct_name * const $name[] = {" > $TMPH
7623     for c in $*; do
7624         if enabled $c; then
7625             case $name in
7626                 filter_list)
7627                     eval c=\$full_filter_name_${c%_filter}
7628                 ;;
7629                 indev_list)
7630                     c=${c%_indev}_demuxer
7631                 ;;
7632                 outdev_list)
7633                     c=${c%_outdev}_muxer
7634                 ;;
7635             esac
7636             printf "    &ff_%s,\n" $c >> $TMPH
7637         fi
7638     done
7639     if [ "$name" = "filter_list" ]; then
7640         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7641             printf "    &ff_%s,\n" $c >> $TMPH
7642         done
7643     fi
7644     echo "    NULL };" >> $TMPH
7645     cp_if_changed $TMPH $file
7646 }
7647
7648 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7649 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7650 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7651 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7652 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7653 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7654 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7655 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7656 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7657
7658 # Settings for pkg-config files
7659
7660 cat > $TMPH <<EOF
7661 # Automatically generated by configure - do not modify!
7662 shared=$shared
7663 build_suffix=$build_suffix
7664 prefix=$prefix
7665 libdir=$libdir
7666 incdir=$incdir
7667 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7668 source_path=${source_path}
7669 LIBPREF=${LIBPREF}
7670 LIBSUF=${LIBSUF}
7671 extralibs_avutil="$avutil_extralibs"
7672 extralibs_avcodec="$avcodec_extralibs"
7673 extralibs_avformat="$avformat_extralibs"
7674 extralibs_avdevice="$avdevice_extralibs"
7675 extralibs_avfilter="$avfilter_extralibs"
7676 extralibs_avresample="$avresample_extralibs"
7677 extralibs_postproc="$postproc_extralibs"
7678 extralibs_swscale="$swscale_extralibs"
7679 extralibs_swresample="$swresample_extralibs"
7680 EOF
7681
7682 for lib in $LIBRARY_LIST; do
7683     lib_deps="$(eval echo \$${lib}_deps)"
7684     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7685 done
7686
7687 cp_if_changed $TMPH ffbuild/config.sh